Everyone is talking about occupational diseases, so what are they? Occupational diseases are diseases caused by workers’ exposure to dust, radioactive substances and other toxic and harmful substances during their occupational activities. Many diseases are not in a single category, and occupational diseases are no exception. Let me introduce the classification of occupational diseases to you next. What are the main categories of occupational diseases? Occupational diseases include nine categories, which are: 1. Occupational poisoning. There are lead and its compounds poisoning, mercury and its compounds poisoning, etc. 2. Pneumoconiosis. There are silicosis, coal workers’ pneumoconiosis, etc. 3, physical factors occupational diseases. There are heat stroke, decompression sickness, etc. 4.Occupational eye diseases. There are chemical eye burns, electro-optical ophthalmia, etc. 5, occupational ear, nose and throat diseases. There are noise deafness, chromic rhinopathy. 6.Occupational tumors. There are lung cancer and mesothelial cancer caused by asbestos, bladder cancer caused by benzidine, etc. 7, occupational infectious diseases. There are anthrax, forest encephalitis, etc. 8.Occupational skin diseases. There are contact dermatitis, photosensitive dermatitis, etc. 9, other occupational diseases. There are chemical burns, metal fume fever, etc. If you are often in an environment that may induce occupational diseases, you must pay more attention to your own health and go to the hospital for regular checkups. The diagnosis of occupational diseases should be undertaken by medical and health institutions approved by the administrative department of health of the people’s government at or above the provincial level. Therefore, more knowledge about the disease can play a role in avoiding the disease to find the door, you should usually pay more attention and prevention.