Occupational exposure is the exposure of people to harmful chemicals, rays, pathogenic microorganisms, and other injuries at work. Among the occupational exposures that are closely related to the occurrence of blood disorders are exposure to certain chemicals and rays. Compounds such as benzene, toluene, xylene, dibenzanthrene, benzopyrene, methylcholanthrene, and dimethylbenzene anthracene are compounds that have been affirmed to cause blood system diseases such as leukemia, aplastic anemia, and myelodysplastic syndrome. Paint, tenax, glue, gasoline, hair dye contain a lot of benzene and benzene compounds, so painters, renovation workers, electronic component workers, shoe factory workers, drivers, hairdressers are easily exposed to the harm of benzene and benzene compounds, and are prone to blood diseases if they are not well protected. X-rays, γ-rays, neutron rays, etc. can cause leukemia, aplastic anemia, myelodysplastic syndrome, lymphoma, multiple myeloma and other blood system diseases. Therefore, people engaged in radioactive work should be adequately protected. Lead is a widely used raw material in industrial production, and a large number of people are exposed to lead. Lead inhibits the synthesis of hemoglobin and shortens the life span of red blood cells, thus easily causing chronic anemia. Copper compounds such as copper sulfate, copper acetate and copper chloride are also widely used raw materials in industry, and long-term exposure to copper compounds can cause hemolytic anemia. Arsenical hydrogen, antimonial hydrogen, and aluminum elements can also cause hemolytic anemia. Therefore, personnel with exposure to the above chemicals should be highly aware of self-protection and do a good job of protection. Personnel with a history of occupational exposure should go to the hospital promptly for examination if symptoms such as dizziness, weakness, fever, bleeding from gums and nose, bone pain, etc. occur. If diagnosed with the above-mentioned blood system diseases after examination, they should apply for occupational disease identification at the disease control center where they work in order to protect their legitimate rights and interests.