Professional restrictions refer to the majors restricted by volunteering for the college entrance examination. Any major with naked eye vision below 5.0 cannot be admitted: flying technology, navigation technology, fire engineering, criminal science and technology, reconnaissance; Any major with naked eye vision less than 4.8 cannot be admitted: marine engineering, sports training, national traditional sports; If the ametropia is corrected to 4.8 and the lens power is greater than 400 degrees, it is not suitable for majors: marine technology, marine science, measurement and control technology and instruments, nuclear engineering and nuclear technology, biomedical engineering, clothing design and engineering, aircraft manufacturing engineering, and aircraft manufacturing engineering; If the ametropia is corrected to 4.8 and the lens degree is greater than 800 degrees, it is not suitable for majors: geology and mineral resources, water conservancy, civil engineering, animal husbandry, aquatic products, materials, energy and power, chemical industry and pharmacy, weapons, agricultural engineering, forestry engineering, plant production, forest resources, environmental ecology, medicine, psychology, environment and safety, and environmental science. Atmospheric science and geographical science, surveying and mapping engineering, traffic engineering, transportation, oil and gas storage and transportation engineering, ship and ocean engineering, biological engineering, grassland science and animal medicine; Public security colleges and military academies have special requirements for eyesight (science students must be above 4.9(0.8) and arts students must be above 4.8(0.6)).