Product development process analysis and reengineering are the basic for enterprise to put CE into practice. The characteristics of concurrent PDP are analyzed and compared with the traditional PDP. The basic requirements, methods and steps of PDP analysis, improvement and reengineering for CE are presented. The process model for PDP analysis and reengineering is built. According to the actual PDP in Qiqihar Railway Rolling Stock Company in China, the process for the grain rolling stock development is analyzed and improved, and the result is satisfactory.