阐述了CRH380D型动车组客室门在运行中发现的问题,给出了设计改进方案。在CRH1A型动车组客室门设计中进一步优化了设计方案。 This paper expounds the problems in operation of CRH380 D MU passenger compartment door and gives design improvement scheme. The design scheme is optimized in the design of CRH1 A MU passenger compartment door.