OBJECTIVE To provide warnings for preventing medical disputes,and standardize management of off-label use of drugs.METHODS Four typical medical disputes caused by off-label use of drugs which were documented by legal judgment were analyzed.RESULTS The 4 cases were all insufficient in rational use of drugs,duty of care and duty of obligation to disclose,and in prevention and timely treatment of adverse reactions.CONCLUSION Doctors should follow the standards of diagnosis and treatment with sufficient clinica...