Abstract: Objective To understand the status of the workplace occupational hazards in the key industries in Da'an District of Zigong City,provide reference basis for occupational disease prevention and control work of administrative regulatory departments. Methods The monitoring and on-site investigation of 68 enterprises were conducted according to the workplace occupational hazard monitoring project program in Da'an District of Zigong City from 2020 to 2022. Results The main occupational hazards present in the key industries in Da'an District of Zigong City were silica dust,welding fume,benzene,toluene,xylene,manganese and inorganic its compounds,and noise. Among the monitoring results of different harmful factors,the qualification rate of noise was the the lowest,which was 82.06%. The occupational health examination results showed that the abnormal rate of noise was the highest,which was 20.82%. Conclusions The current situation of occupational health management in key industries in Da'an District of Zigong City from 2020 to 2022 is severe,with high risk of occupational disease hazards. It is necessary to improve the supervision team for occupational disease prevention and control,seize key positions,and promote the implementation of the main responsibility for occupational disease prevention and control in enterprises.

Key words: Key industries, Occupational hazard factors, Detection, Noise