To investigate the current situation and impact factors of outpatient service supply in community hospitals in Jiangsu Province, in order to provide references for promoting the construction of community hospitals. Methods: A self-adminis- tered questionnaire was used to investigate the professionals, infrastructures, clinical department settings and service capacity of a to- tal of 210 community hospitals in Jiangsu Province. Wilcoxon test and multiple linear regression were used to analyze the impact fac- tors of outpatient service supply. Results: The input indexes and output indexes of community hospitals are higher than all primary health care institutions in Jiangsu. Community health service centers with otolaryngology, hospice, and geriatrics departments, as well as township hospitals with pediatrics, ophthalmology and psychiatric departments, have a higher annual outpatient visits than institu- tions without relevant clinical departments(P＜0.05). Multifactorial analysis showed that the average annual outpatient visits per physi- cian is significantly positively associated with income per capita, while negatively correlated with the ratio of physicians to nurses and bed size. Conclusions: Community hospital construction effectively improved the medical service capacity of primary health care insti- tutions. Primary health care institutions need to constantly adapt to the health needs of the people when setting clinical departments. The construction of the primary nursing human resources needs to be further strengthened. The pathways of transferring primary health care institutions of different regions, sizes and levels to community hospitals should be further studied.