Abstract: Mine labor contracting units usually engage in underground and auxiliary maintenance op‐ erations in mines，and people are exposed to a wide variety of occupational disease hazards，whose health is very serious. To assess the current situation of occupational disease hazards exposed to workers in four metal mine labor contracting units under a certain group，the research adopts on-site investigation methods and oc‐ cupational disease hazard factor detection methods to identify and detect occupational disease hazard factors existing in the mining and maintenance processes of labor contracting units. Targeted control and treatment measures were proposed. The results show that the qualified rate of dust position (total dust) detection is 76.6%，and the maximum concentration of silica dust (total dust) reaches 6.9 mg/m³. The pass rate of silica dust (exhaled dust) detection was 71.9%，and the maximum concentration of silica dust (exhaled dust) reached 4.2 mg/m³. The noise detection pass rate was 73.6%. The noise in the rock drilling and maintenance processes exceeded the standard seriously，with the maximum noise value reaching 102.1 dB. The test re‐ sults of other physical factors and chemical toxins were all qualified. Labor contracting units should take ef‐ fective prevention and control measures for employees in positions with excessive occupational disease haz‐ ard factors and enhance the use of personal protective equipment. Great attention should be paid to problems such as thickened lung markings and hearing loss that occur during occupational health examinations.