Objective To study the features,general patterns and predisposing factors of adverse drug reactions(ADR) occurred in our hospital and to provide the guidance for rational and safe use of drugs in clinic.Methods 302 cases of ADR were reported from September 2015 to September 2017 in our hospital.Age distribution,gender,route of administration,drug categories,systems or organs involved,clinical manifestations,adverse reaction types involved in ADRs were analyzed retro-spectively.Results Among the 302 ADR reports,137 cases are male patients(accounting for 45.4%)and 165 cases were fe-male patients(accounting for 54.6%).27.8% of ADR was related to anti-infective agents.70.2% of ADR came from oral ad-ministration and 24.8% ADR was due to intravenous administration.The main clinical manifestations of ADR were lesion of skin and its appendants(61.6%)and followed by the digestive system injury(15.9%).Conclusion The multiple factors may lead to high frequency of ADR.In order to promote rational drug use and reduce the occurrence of ADR,clinicians should pay attention to the ADR monitoring and strictly follow the clinical indications of medications.