Objective To explore the clinical features,risk factors and TCM syndromes of mild hepatic encephalopathy. Methods The clinical data of 120 patients with liver cirrhosis admitted to the inpatient department,Center for Integrative Medicine,Beijing Ditan Hospital affiliated to the Capital Medical University from June 2017 to October 2018 were analyzed,and the characteristics of TCM syndromes of were studied. Results There were 52 cases of mild hepatic encephalopathy,accounting for 43. 3%,among which there were 32 cases of male and 20 cases of female. 68 patients did not have mild hepatic encephalopathy,accounted for 56. 7%,including 41 male and 27 female cases. The patients with decompensated cirrhosis in the mild hepatic encephalopathy group were obviously increased than those in the non mild hepatic encephalopathy group（ P < 0. 05）,the child classification significantly higher（ P < 0. 05）,and albumin significantly decreased. With logistic regression analysis,albumin and the child classification were risk factors for mild hepatic encephalopathy occurrence（ P < 0. 05）. The syndrome of liver and kidney Yin deficiency and the syndrome of blood stasis in the collateral were the most important syndrome features of patients with mild hepatic encephalopathy. Conclusion Mild hepatic encephalopathy is mostly found in the stage of decompensated cirrhosis. The more severe liver damage is,the higher the incidence of mild hepatic encephalopathy is.