Many raw materials, intermediates and final products in industrial production are toxic to the human body and are called industrial poisons. Some of them can selectively damage peripheral nerves and cause toxic peripheral neuropathy. In the production, transportation, storage and use of industrial poisons, due to improper protection, the poisons can be absorbed through the respiratory tract and skin, causing the so-called occupational toxic peripheral neuropathy. There are many types of industrial poisons that can cause peripheral neuropathy, mainly including the following categories: 1. Metals and metalloids Lead, bismuth, antimony, thallium, mercury, arsenic and their compounds. 2. Organic solvents or organic compounds Benzene, gasoline, methanol, n-hexane, methyl n-butyl ketone, carbon disulfide, trinitrophenol, carbon tetrachloride, trichloroethylene, allyl chloride, methyl bromide. 3. High molecular polymers Vinyl chloride, styrene, acrylamide, butadiene. 4. Asphyxiating gases Carbon monoxide. 5. Pesticides Organophosphorus, carbamates.