STEM相关的专业一直是申请时的大热门，那究竟什么是STEM专业呢？简单来说，STEM专业就是指：Science（科学），Technology（技术），Engineering（工程）和Mathematics（数学）这四大类。
美国政府 STEM计划是为了吸引人才，鼓励学生主修科学、技术、工程和数学领域，并不断加大科学、技术、工程和数学教育的投入，培养学生的科技理工素养，从而提升其全球竞争力。STEM计划的实施为理工科的国际学生寻找工作或实习带来很大的帮助，在OPT实习期间，国际学生可有充裕的时间申请工作签证，转换移民身份。
以下是美国国土安全局发布的最新 STEM专业列表：
1 1.0308 Agroecology an Sustainable Agriculture.
1 1.0901 Animal Sciences, General
1 1.0902 Agricultural Animal Breeing
1 1.0903 Animal Health
1 1.0904 Animal Nutrition
1 1.0905 Dairy Science
1 1.0906 Livestock Management
1 1.0907 Poultry Science
1 1.0999 Animal Sciences, Other.
1 1.1001 Foo Science
1 1.1002 Foo Technology an Processing
1 1.1099 Foo Science an Technology, Other.
1 1.1101 Plant Sciences, General
1 1.1102 Agronomy an Crop Science
1 1.1103 Horticultural Science
1 1.1104 Agricultural an Horticultural Plant Breeing
1 1.1105 Plant Protection an Integrate Pest Management
1 1.1106 Range Science an Management
1 1.1199 Plant Sciences, Other.
1 1.1201 Soil Science an Agronomy, General
1 1.1202 Soil Chemistry an Physics
1 1.1203 Soil Microbiology
1 1.1299 Soil Sciences, Other.
3 3.0101 Natural Resources/Conservation, General.
3 3.0103 Environmental Stuies.
3 3.0104 Environmental Science
3 3.0199 Natural Resources Conservation an Research, Other.
3 3.0205 Water, Wetlans, an Marine Resources Management.
3 3.0502 Forest Sciences an Biology
3 3.0508 Urban Forestry.
3 3.0509 Woo Science an Woo Proucts/Pulp an Paper Technology
3 3.0601 Willife, Fish an Willans Science an Management.
4 4.0902 Architectural an Builing Sciences/Technology.
9 9.0702 Digital Communication an Meia/Multimeia
10 10.0304 Animation, Interactive Technology, Vieo Graphics an Special
Effects
11 11.0101 Computer an Information Sciences, General
11 11.0102 Artificial Intelligence
11 11.0103 Information Technology
11 11.0104 Informatics
11 11.0199 Computer an Information Sciences, Other.
11 11.0201 Computer Programming/Programmer, General
11 11.0202 Computer Programming, Specific Applications
11 11.0203 Computer Programming, Venor/Prouct Certification
11 11.0299 Computer Programming, Other.
11 11.0301 Data Processing an Data Processing Technology/Technician
11 11.0401 Information Science/Stuies
11 11.0501 Computer Systems Analysis/Analyst
11 11.0701 Computer Science
11 11.0801 Web Page, Digital/Multimeia an Information Resources Design
11 11.0802 Data Moeling/Warehousing an Database Aministration
11 11.0803 Computer Graphics
11 11.0804 Moeling, Virtual Environments an Simulation
11 11.0899 Computer Software an Meia Applications, Other.
11 11.0901 Computer Systems Networking an Telecommunications
11 11.1001 Network an System Aministration/Aministrator
11 11.1002 System, Networking, an LAN/WAN Management/Manager
11 11.1003 Computer an Information Systems Security/Information Assurance
11 11.1004 Web/Multimeia Management an Webmaster
11 11.1005 Information Technology Project Management
11 11.1006 Computer Support Specialist
11 11.1099 Computer/Information Technology Services Aministration an Management, Other.
13 13.0501 Eucational/Instructional Technology.
13 13.0601 Eucational Evaluation an Research.
13 13.0603 Eucational Statistics an Research Methos
14 14.0101 Engineering, General
14 14.0102 Pre-Engineering
14 14.0201 Aerospace, Aeronautical an Astronautical/Space Engineering
14 14.0301 Agricultural Engineering
14 14.0401 Architectural Engineering
14 14.0501 Bioengineering an Biomeical Engineering
14 14.0601 Ceramic Sciences an Engineering
14 14.0701 Chemical Engineering
14 14.0702 Chemical an Biomolecular Engineering
14 14.0799 Chemical Engineering, Other.
14 14.0801 Civil Engineering, General
14 14.0802 Geotechnical an Geoenvironmental Engineering
14 14.0803 Structural Engineering
14 14.0804 Transportation an Highway Engineering
14 14.0805 Water Resources Engineering
14 14.0899 Civil Engineering, Other.
14 14.0901 Computer Engineering, General
14 14.0902 Computer Harware Engineering
14 14.0903 Computer Software Engineering
14 14.0999 Computer Engineering, Other.
14 14.1001 Electrical an Electronics Engineering
14 14.1003 Laser an Optical Engineering
14 14.1004 Telecommunications Engineering
14 14.1099 Electrical, Electronics an Communications Engineering, Other.
14 14.1101 Engineering Mechanics
14 14.1201 Engineering Physics/Applie Physics
14 14.1301 Engineering Science
14 14.1401 Environmental/Environmental Health Engineering
14 14.1801 Materials Engineering
14 14.1901 Mechanical Engineering
14 14.2001 Metallurgical Engineering
14 14.2101 Mining an Mineral Engineering
14 14.2201 Naval Architecture an Marine Engineering
14 14.2301 Nuclear Engineering
14 14.2401 Ocean Engineering
14 14.2501 Petroleum Engineering
14 14.2701 Systems Engineering
14 14.2801 Textile Sciences an Engineering
14 14.3201 Polymer/Plastics Engineering
14 14.3301 Construction Engineering
14 14.3401 Forest Engineering
14 14.3501 Inustrial Engineering
14 14.3601 Manufacturing Engineering
14 14.3701 Operations Research
14 14.3801 Surveying Engineering
14 14.3901 Geological/Geophysical Engineering
14 14.4001 Paper Science an Engineering
14 14.4101 Electromechanical Engineering
14 14.4201 Mechatronics, Robotics, an Automation Engineering
14 14.4301 Biochemical Engineering
14 14.4401 Engineering Chemistry
14 14.4501 Biological/Biosystems Engineering
14 14.9999 Engineering, Other.
15 15.0000 Engineering Technology, General
15 15.0101 Architectural Engineering Technology/Technician
15 15.0201 Civil Engineering Technology/Technician
15 15.0303 Electrical, Electronic an Communications Engineering
Technology/Technician
15 15.0304 Laser an Optical Technology/Technician
15 15.0305 Telecommunications Technology/Technician
15 15.0306 Integrate Circuit Design
15 15.0399 Electrical an Electronic Engineering Technologies/Technicians, Other.
15 15.0401 Biomeical Technology/Technician
15 15.0403 Electromechanical Technology/Electromechanical Engineering
Technology
15 15.0404 Instrumentation Technology/Technician
15 15.0405 Robotics Technology/Technician
15 15.0406 Automation Engineer Technology/Technician
15 15.0499 Electromechanical an Instrumentation an Maintenance Technologies/Technicians, Other.
15 15.0501 Heating, Ventilation, Air Conitioning an Refrigeration Engineering
Technology/Technician
15 15.0503 Energy Management an Systems Technology/Technician
15 15.0505 Solar Energy Technology/Technician.
15 15.0506 Water Quality an Wastewater Treatment Management an Recycling
Technology/Technician
15 15.0507 Environmental Engineering Technology/Environmental Technology
15 15.0508 Hazarous Materials Management an Waste Technology/Technician
15 15.0599 Environmental Control Technologies/Technicians, Other.
15 15.0607 Plastics an Polymer Engineering Technology/Technician
15 15.0611 Metallurgical Technology/Technician
15 15.0612 Inustrial Technology/Technician
15 15.0613 Manufacturing Engineering Technology/Technician
15 15.0614 Weling Engineering Technology/Technician
15 15.0615 Chemical Engineering Technology/Technician
15 15.0616 Semiconuctor Manufacturing Technology
15 15.0699 Inustrial Prouction Technologies/Technicians, Other.
15 15.0701 Occupational Safety an Health Technology/Technician
15 15.0702 Quality Control Technology/Technician
15 15.0703 Inustrial Safety Technology/Technician
15 15.0704 Hazarous Materials Information Systems Technology/Technician
15 15.0799 Quality Control an Safety Technologies/Technicians, Other.
15 15.0801 Aeronautical/Aerospace Engineering Technology/Technician
15 15.0803 Automotive Engineering Technology/Technician
15 15.0805 Mechanical Engineering/Mechanical Technology/Technician
15 15.0899 Mechanical Engineering Relate Technologies/Technicians, Other.
15 15.0901 Mining Technology/Technician
15 15.0903 Petroleum Technology/Technician
15 15.0999 Mining an Petroleum Technologies/Technicians, Other.
15 15.1001 Construction Engineering Technology/Technician
15 15.1102 Surveying Technology/Surveying
15 15.1103 Hyraulics an Flui Power Technology/Technician
15 15.1199 Engineering-Relate Technologies, Other.
15 15.1201 Computer Engineering Technology/Technician
15 15.1202 Computer Technology/Computer Systems Technology
15 15.1203 Computer Harware Technology/Technician
15 15.1204 Computer Software Technology/Technician
15 15.1299 Computer Engineering Technologies/Technicians, Other.
15 15.1301 Drafting an Design Technology/Technician, General
15 15.1302 CAD/CADD Drafting an/or Design Technology/Technician
15 15.1303 Architectural Drafting an Architectural CAD/CADD
15 15.1304 Civil Drafting an Civil Engineering CAD/CADD
15 15.1305 Electrical/Electronics Drafting an Electrical/Electronics CAD/CADD
15 15.1306 Mechanical Drafting an Mechanical Drafting CAD/CADD
15 15.1399 Drafting/Design Engineering Technologies/Technicians, Other.
15 15.1401 Nuclear Engineering Technology/Technician
15 15.1501 Engineering/Inustrial Management
15 15.1502 Engineering Design
15 15.1503 Packaging Science
15 15.1599 Engineering-Relate Fiels, Other.
15 15.1601 Nanotechnology
15 15.9999 Engineering Technologies an Engineering-Relate Fiels, Other.
26 26.0101 Biology/Biological Sciences, General
26 26.0102 Biomeical Sciences, General
26 26.0202 Biochemistry
26 26.0203 Biophysics
26 26.0204 Molecular Biology
26 26.0205 Molecular Biochemistry
26 26.0206 Molecular Biophysics
26 26.0207 Structural Biology
26 26.0208 Photobiology
26 26.0209 Raiation Biology/Raiobiology
26 26.0210 Biochemistry an Molecular Biology
26 26.0299 Biochemistry, Biophysics an Molecular Biology, Other.
26 26.0301 Botany/Plant Biology
26 26.0305 Plant Pathology/Phytopathology
26 26.0307 Plant Physiology
26 26.0308 Plant Molecular Biology
26 26.0399 Botany/Plant Biology, Other.
26 26.0401 Cell/Cellular Biology an Histology
26 26.0403 Anatomy
26 26.0404 Developmental Biology an Embryology
26 26.0406 Cell/Cellular an Molecular Biology
26 26.0407 Cell Biology an Anatomy
26 26.0499 Cell/Cellular Biology an Anatomical Sciences, Other.
26 26.0502 Microbiology, General
26 26.0503 Meical Microbiology an Bacteriology
26 26.0504 Virology
26 26.0505 Parasitology
26 26.0506 Mycology
26 26.0507 Immunology
26 26.0508 Microbiology an Immunology
26 26.0599 Microbiological Sciences an Immunology, Other.
26 26.0701 Zoology/Animal Biology
26 26.0702 Entomology
26 26.0707 Animal Physiology
26 26.0708 Animal Behavior an Ethology
26 26.0709 Willife Biology
26 26.0799 Zoology/Animal Biology, Other.
26 26.0801 Genetics, General
26 26.0802 Molecular Genetics
26 26.0803 Microbial an Eukaryotic Genetics
26 26.0804 Animal Genetics
26 26.0805 Plant Genetics
26 26.0806 Human/Meical Genetics
26 26.0807 Genome Sciences/Genomics
26 26.0899 Genetics, Other.
26 26.0901 Physiology, General
26 26.0902 Molecular Physiology
26 26.0903 Cell Physiology
26 26.0904 Enocrinology
26 26.0905 Reprouctive Biology
26 26.0907 Cariovascular Science
26 26.0908 Exercise Physiology
26 26.0909 Vision Science/Physiological Optics
26 26.0910 Pathology/Experimental Pathology
26 26.0911 Oncology an Cancer Biology
26 26.0912 Aerospace Physiology an Meicine
26 26.0999 Physiology, Pathology, an Relate Sciences, Other.
26 26.1001 Pharmacology
26 26.1002 Molecular Pharmacology
26 26.1003 Neuropharmacology
26 26.1004 Toxicology
26 26.1005 Molecular Toxicology
26 26.1006 Environmental Toxicology
26 26.1007 Pharmacology an Toxicology
26 26.1099 Pharmacology an Toxicology, Other.
26 26.1101 Biometry/Biometrics
26 26.1102 Biostatistics
26 26.1103 Bioinformatics
26 26.1104 Computational Biology
26 26.1199 Biomathematics, Bioinformatics, an Computational Biology, Other.
26 26.1201 Biotechnology
26 26.1301 Ecology
26 26.1302 Marine Biology an Biological Oceanography
26 26.1303 Evolutionary Biology
26 26.1304 Aquatic Biology/Limnology
26 26.1305 Environmental Biology
26 26.1306 Population Biology
26 26.1307 Conservation Biology
26 26.1308 Systematic Biology/Biological Systematics
26 26.1309 Epiemiology
26 26.1310 Ecology an Evolutionary Biology
26 26.1399 Ecology, Evolution, Systematics an Population Biology, Other.
26 26.1401 Molecular Meicine
26 26.1501 Neuroscience
26 26.1502 Neuroanatomy
26 26.1503 Neurobiology an Anatomy
26 26.1504 Neurobiology an Behavior
26 26.1599 Neurobiology an Neurosciences, Other.
26 26.9999 Biological an Biomeical Sciences, Other.
27 27.0101 Mathematics, General
27 27.0102 Algebra an Number Theory
27 27.0103 Analysis an Functional Analysis
27 27.0104 Geometry/Geometric Analysis
27 27.0105 Topology an Founations
27 27.0199 Mathematics, Other.
27 27.0301 Applie Mathematics, General
27 27.0303 Computational Mathematics
27 27.0304 Computational an Applie Mathematics
27 27.0305 Financial Mathematics
27 27.0306 Mathematical Biology
27 27.0399 Applie Mathematics, Other.
27 27.0501 Statistics, General
27 27.0502 Mathematical Statistics an Probability
27 27.0503 Mathematics an Statistics
27 27.0599 Statistics, Other.
27 27.9999 Mathematics an Statistics, Other.
28 28.0501 Air Science/Airpower Stuies.
28 28.0502 Air an Space Operational Art an Science.
28 28.0505 Naval Science an Operational Stuies.
29 29.0201 Intelligence, General
29 29.0202 Strategic Intelligence
29 29.0203 Signal/Geospatial Intelligence
29 29.0204 Comman & Control (C3, C4I) Systems an Operations
29 29.0205 Information Operations/Joint Information Operations
29 29.0206 Information/Psychological Warfare an Military Meia Relations
29 29.0207 Cyber/Electronic Operations an Warfare
29 29.0299 Intelligence, Comman Control an Information Operations, Other.
29 29.0301 Combat Systems Engineering
29 29.0302 Directe Energy Systems
29 29.0303 Engineering Acoustics
29 29.0304 Low-Observables an Stealth Technology
29 29.0305 Space Systems Operations
29 29.0306 Operational Oceanography
29 29.0307 Unersea Warfare
29 29.0399 Military Applie Sciences, Other.
29 29.0401 Aerospace Groun Equipment Technology
29 29.0402 Air an Space Operations Technology
29 29.0403 Aircraft Armament Systems Technology
29 29.0404 Explosive Orinance/Bomb Disposal
29 29.0405 Joint Comman/Task Force (C3, C4I) Systems
29 29.0406 Military Information Systems Technology
29 29.0407 Missile an Space Systems Technology
29 29.0408 Munitions Systems/Orinance Technology
29 29.0409 Raar Communications an Systems Technology
29 29.0499 Military Systems an Maintenance Technology, Other.
29 29.9999 Military Technologies an Applie Sciences, Other.
30 30.0101 Biological an Physical Sciences
30 30.0601 Systems Science an Theory
30 30.0801 Mathematics an Computer Science
30 30.1001 Biopsychology
30 30.1701 Behavioral Sciences.
30 30.1801 Natural Sciences
30 30.1901 Nutrition Sciences
30 30.2501 Cognitive Science
30 30.2701 Human Biology.
30 30.3001 Computational Science.
30 30.3101 Human Computer Interaction.
30 30.3201 Marine Sciences
30 30.3301 Sustainability Stuies.
40 40.0101 Physical Sciences
40 40.0201 Astronomy
40 40.0202 Astrophysics
40 40.0203 Planetary Astronomy an Science
40 40.0299 Astronomy an Astrophysics, Other.
40 40.0401 Atmospheric Sciences an Meteorology, General
40 40.0402 Atmospheric Chemistry an Climatology
40 40.0403 Atmospheric Physics an Dynamics
40 40.0404 Meteorology
40 40.0499 Atmospheric Sciences an Meteorology, Other.
40 40.0501 Chemistry, General
40 40.0502 Analytical Chemistry
40 40.0503 Inorganic Chemistry
40 40.0504 Organic Chemistry
40 40.0506 Physical Chemistry
40 40.0507 Polymer Chemistry
40 40.0508 Chemical Physics
40 40.0509 Environmental Chemistry
40 40.0510 Forensic Chemistry
40 40.0511 Theoretical Chemistry
40 40.0599 Chemistry, Other.
40 40.0601 Geology/Earth Science, General
40 40.0602 Geochemistry
40 40.0603 Geophysics an Seismology
40 40.0604 Paleontology
40 40.0605 Hyrology an Water Resources Science
40 40.0606 Geochemistry an Petrology
40 40.0607 Oceanography, Chemical an Physical
40 40.0699 Geological an Earth Sciences/Geosciences, Other.
40 40.0801 Physics, General
40 40.0802 Atomic/Molecular Physics
40 40.0804 Elementary Particle Physics
40 40.0805 Plasma an High-Temperature Physics
40 40.0806 Nuclear Physics
40 40.0807 Optics/Optical Sciences
40 40.0808 Conense Matter an Materials Physics
40 40.0809 Acoustics
40 40.0810 Theoretical an Mathematical Physics
40 40.0899 Physics, Other.
40 40.1001 Materials Science
40 40.1002 Materials Chemistry
40 40.1099 Materials Sciences, Other.
40 40.9999 Physical Sciences, Other.
41 41.0000 Science Technologies/Technicians, General
41 41.0101 Biology Technician/Biotechnology Laboratory Technician
41 41.0204 Inustrial Raiologic Technology/Technician
41 41.0205 Nuclear/Nuclear Power Technology/Technician
41 41.0299 Nuclear an Inustrial Raiologic Technologies/Technicians, Other.
41 41.0301 Chemical Technology/Technician
41 41.0303 Chemical Process Technology
41 41.0399 Physical Science Technologies/Technicians, Other.
41 41.9999 Science Technologies/Technicians, Other.
42 42.2701 Cognitive Psychology an Psycholinguistics
42 42.2702 Comparative Psychology
42 42.2703 Developmental an Chil Psychology
42 42.2704 Experimental Psychology
42 42.2705 Personality Psychology
42 42.2706 Physiological Psychology/Psychobiology
42 42.2707 Social Psychology
42 42.2708 Psychometrics an Quantitative Psychology
42 42.2709 Psychopharmacology
42 42.2799 Research an Experimental Psychology, Other.
43 43.0106 Forensic Science an Technology
43 43.0116 Cyber/Computer Forensics an Counterterrorism.
45 45.0301 Archeology.
45 45.0603 Econometrics an Quantitative Economics.
45 45.0702 Geographic Information Science an Cartography
49 49.0101 Aeronautics/Aviation/Aerospace Science an Technology, General.
51 51.1002 Cytotechnology/Cytotechnologist.
51 51.1005 Clinical Laboratory Science/Meical Technology/Technologist.
51 51.1401 Meical Scientist
51 51.2003 Pharmaceutics an Drug Design
51 51.2004 Meicinal an Pharmaceutical Chemistry
51 51.2005 Natural Proucts Chemistry an Pharmacognosy
51 51.2006 Clinical an Inustrial Drug Development.
51 51.2007 Pharmacoeconomics/Pharmaceutical Economics.
51 51.2009 Inustrial an Physical Pharmacy an Cosmetic Sciences.
51 51.2010 Pharmaceutical Sciences.
51 51.2202 Environmental Health.
51 51.2205 Health/Meical Physics.
51 51.2502 Veterinary Anatomy
51 51.2503 Veterinary Physiology
51 51.2504 Veterinary Microbiology an Immunobiology
51 51.2505 Veterinary Pathology an Pathobiology
51 51.2506 Veterinary Toxicology an Pharmacology
51 51.2510 Veterinary Preventive Meicine Epiemiology an Public Health
51 51.2511 Veterinary Infectious Diseases
51 51.2706 Meical Informatics
52 52.1301 Management Science
52 52.1302 Business Statistics
52 52.1304 Actuarial Science
52 52.1399 Management Science an Quantitative Methos, Other
