Abstract: Objective To analyze the regularity and characteristics of occupational diseases in Yunnan Province from 2011 to 2020,provide a scientific basis for occupational disease prevention. Methods The new cases of occupational diseases in Yunnan Province from 2011 to 2020 were collected from the "Occupational diseases and health hazactors monitoring information system",and the disease,region and industry distribution of cases were statistically analyzed. Results From 2011 to 2020,3 894 new occupational disease cases were reported in Yunnan Province. Among them,the number of new cases of occupational pneumoconiosis,occupational poisoning and occupational skin disease ranked top three,accounting for 92.42%,5.83% and 0.51% respectively. The proportion of male cases（98.97%） was much higher than that of female cases（1.03%）. The median age of cases was 46 years old,and the median length of service was 7.42 years. The new cases of occupational diseases increased year by year since 2011,reaching its peak in 2014,after that,it has shown a fluctuating downward trend. The top three regions were Chuxiong Prefecture,Kunming City and Zhaotong City. The industry was mainly distributed in the mining and manufacturing industries,mainly small enterprises and private economy. Conclusion The occupational pneumoconiosis is the main disease of occupational diseases in Yunnan Province from 2011 to 2020,the occupational diseases show the cluster distribution in regions,industries and enterprises,and strengthening the prevention and control of occupational diseases in key industries and enterprises is the focus of occupational disease prevention.

Key words: Occupational disease, Disease regularity, Characteristic analysis