OBJECTIVE：To investigate the influ ential factors of traditional Chinese medicine （TCM）service utilized by outpatients in Jiangsu province ，and to provide reference for scientific utilization of TCM service. METHODS ：Based on the data of Jiangsu province in National Sixth Health Service Survey in 2018，descriptive analysis was performed for the general situation and population characteristics of 1 617 outpatients in Jiangsu province. Single factor analysis and multivariate binary Logistic regression model analysis were used to analyze the influential factors of TCM service utilized by outpatients. RESULTS ：Of the 1 617 respondents，145 patients（9.0％）applied TCM services at outpatient visits. Results of single factor analysis showed that age ， education degree ，annual income ，whether to participate in basic medical insurance ，self-perceived illness severity ，hypertension， diabetes，other chronic diseases ，and the first diagnose institutions were significant influential factors for TCM service utilized by outpatients in Jiangsu province （P＜0.05）. Results of binary Logistic regression showed that the elderly aged 65 years and over ， the patients who participated in the basic medical insurance for urban workers ，the patients with hypertension ，primary medical institutions as first diagnosis institutions ，the middle-income population ，and other chronic diseases were significant influential factors for TCM service utilized by outpatients in Jiangsu province （P＜0.05）. CONCLUSIONS ：Age，annual income ，whether to participate in basic medical insurance ，hypertension and other chronic diseases ，and first diagnosis institutions are significant infleutial factors for TCM service utilized by outpatients in Jiangsu province. The utilization of TCM health services for outpatients in Jiangsu province is in relatively low level ，and middle-aged and elderly patients and patients with chronic diseases show high acceptance for TCM services. Outpatients first diagnosed in primary medical institutions are more willing to accept TCM services.