Abstract: Objective：To study the distribution of inpatients that had been infected by hepatitis C virus according to their gender, age, year, disease category and the status of liver function Methods： The data of inpatients who had taken hepatitis C antibody tests in the Affiliated Stomatological Hospital of Nanjing Medical University from 2008 to 2012 were collected. The patients with hepatitis C antibody positive results were grouped according to their gender, age and year, and their rates of positive results were compared. The data of ALT and AST of the patients with positive hepatitis C antibody were analysed in order to investigate the status of liver function of patients with hepatitis C infection. Results： The positive rate of the inpatients (0.25%) in stomatological hospital was smaller than that of general population (3.2%). The abnormal rate of liver function of the inpatients with positive anti-HCV was 53.33%, and this wa significantly higher than that (17.77%) of the patients with positive HBsAG (χ2＝9.11, P＜0.01). Conclusions：Carrying out the anti-HCV tests on dental patients before operation and traumatic treatment can find out the HCV infectors early. It is necessary to strictly supervise the disinfection of dental equipments. One handpiece should only be used by one patient. Clinical doctors should wear biological safety protection equipments such as face masks. Dental medical staff are needed to strengthen the protection of patients and themselves, strict disinfection of equipment operation, and to prevent nosocomial transmission of HCV. Check of the liver function of the HCV patients should be carried out regularly so as to prevent their liver damage.