OBJECTIVE：To provide reference for i mproving the post-marketing drug risk management in China by refering to the experience of post-marketing drug risk management plan （RMP）in Japan. METHODS ：The process of post-marketing drug regulation in Japan was introduced ，and the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use （ICH）guidelines embodied in RMP in Japan were analyzed. The formulation and application of RMP in Japan during the post-marketing safety management were studied. And suggestions were offered for the improvement of post-marketing drug risk management in China. RESULTS & CONCLUSIONS ：The post-marketing regulation of drugs in Japan is characterized with dynamic regulation and social co-governance. ICH principle runs through the RMP management in Japan. Safety specification and risk minimization activities stipulated in RMP in Japan are consistent with ICH guidelines. RMP is defined in Pharmaceutical Affairs Law in Japan ，and is formulated and implemented under the guidance of the Good Vigilance Practice ；the changes are made under the guidance of the Good Post-marketing Study Practice. RMP is a necessary document for the registration and the re-review of new drugs in Japan ，its formulation is responsible by pharmaceutical enterprise ；RMP of new drug is available to the public through the subscription media system of Pharmaceuticals and Medical Devices Agency （PMDA）， which reflects the multi-governance of the government-pharmaceutical enterprises-the public. In China ，RMP supervision is not systematic and is inexperienced，and there is a lack of guidance documents and insufficient application of information and communication technology. It is suggested that China should strengthen post-marketing safety data management ，promote the connection between sentinel hospitals and pharmacovigilance systems of pharmaceutical enterprise ，increase the application of information and communication technology. Relevant normative documents and guidance documents of RMP should be issued by National Medical Products Administration. And the post-marketing supervision system for drugs should be clarified. Taking RMP publicity as an opportunity promote drug risk mamagement co-government ， realize sunshine and scientific supervision .