The safety of transgenic agricultural products has been highly concerned by the state and the community. The development of transgenic maize was reviewed; the management and relevant laws and regulations for transgenic agricultural products in some countries were analyzed. The inspection of transgenic maize in recent years at Zhoushan port was summarized. The problems and risks supervision on transgenic products were discussed. The specific recommendations were proposed in order to facilitate the supervision of imported transgenic maize for inspection and quarantine departments.