At present, China’s statutory occupational asthma provisions of asthma-causing substances are: 1, isocyanates: toluene diisocyanate (TDI), methylene diphenyl diisocyanate (MDI), hexamethylene diisocyanate (HDI), naphthalene diisocyanate (NDI), etc.; 2, phthalic anhydride: phthalic anhydride (PA ), trimellitic anhydride (TMA), tetrachlorophenyl anhydride (TCPA), etc.; 3, poly Amines: ethylenediamine, diethylenediamine, triethylenetetramine, aminoethyl ethanolamine, p-phenylenediamine, etc.; 4, platinum compound salt; 5, sisal; 6, β-lactam antibiotics containing 6-aminopenicillanic acid (6-APA) structure of penicillins and cephalosporins containing 7-amino cephalosporanic acid (7-ACA) structure; 7, formaldehyde; 8, persulfate: potassium persulfate, sodium persulfate, ammonium persulfate, etc. Ammonium persulfate, etc. Asthma caused by exposure to the above-mentioned occupational asthma-causing substances belongs to the category of occupational diseases, and patients can apply for the diagnosis of occupational asthma at local institutions qualified to diagnose occupational diseases.