The research of integrated process planning and scheduling (IPPS) is of great significance in the improvement of the overall performance of the manufacturing system. This paper reviews and analyzes the development status of IPPS. The three main modeling methods of IPPS are summarized, and the particularity of the integration of process planning and scheduling in a specific production environment is analyzed. The overview of research on IPPS solution method is summarized from two aspects:single-objective optimization and multi-objective optimization, and the problems in the research of multi-objective IPPS solution method are analyzed. In addition, the research status of the IPPS problem under uncertain disturbances and the IPPS problem for green manufacturing are summarized, and the new problems caused by the IPPS model construction and solution method design in the two cases are analyzed. Based on the above summary and analysis, some directions for future research on IPPS are prospected.