Abstract: Objective Through the implementation of active monitoring of pneumoconiosis and the analysis of monitoring results，to study and judge the implementation and effect of pneumoconiosis prevention and control policies and national occupational health standards，provide reference for formulating（revising） policies and standards. Methods A total of 267 small，medium and micro enterprises in 25 monitoring points in 13 cities in Jiangsu Province were selected to carry out active monitoring of occupational disease hazards in the workplace. A total of 6 576 people were monitored，and free health checks were conducted for dust-exposed workers. The statistical analysis was carried out on the results of chest X-ray and lung function. From variables such as region，dust exposure type，industry，enterprise size，gender，age，length of service，and whether dust monitoring was qualified，it was analyzed whether there was a statistical difference in abnormal rate between different groups. Results The active monitoring found that chest X-ray showed four people with pneumoconiosis-like changes，and the detection rate of pneumoconiosis-like changes was 0.06%. Four workers were male，aged 25-<55 years old，had dust exposure age of 4-<15 years，worked in metal products industry，small and medium-sized enterprises，distributed in Yangzhou and Zhenjiang areas，and exposed to silica dust and welding fumes. There were statistically significant differences in the abnormal chest X-ray rates among workers in different region，dust exposure type，industry，enterprise scale，gender，age，length of service and whether dust monitoring was qualified（all P<0.05）. There were statistically significant differences in the abnormal rates of forced vital capacity（FVC） and lung capacity in one second（FEV1.0） among workers in different region，dust exposure category，industry，enterprise scale，gender，age，and working years（all P<0.05）. There were statistically significant differences in the abnormal rates of the amount of air exhaled in the first second as a percentage of total lung volume（FEV1.0/FVC） among workers in different region，industry and working years（all P<0.05）. There was no statistically significant difference in the pulmonary function abnormality rate among workers with and without qualified dust monitoring（all P>0.05）. Conclusions The lung health of dust-exposed workers is related to region，type of dust exposure，industry，enterprise size，gender，age，length of service and dust monitoring. It is necessary to improve the occupational health protection and occupational health monitoring of high-risk groups in enterprises that are unqualified for dust hazard factor monitoring，pay attention to the occurrence of pneumoconiosis in key industries and high-risk groups，and achieve early detection，early diagnosis and early treatment of pneumoconiosis.

Key words: Jiangsu Province, Pneumoconiosis, Active surveillance