Under the background of“Multiple Plans Integration”,and based on the port economic theory,we demonstrate the relationship between the port economic zone planning which takes the coordinated development of the port,industry and city as the core and relevant planning,and explore the framework of port economic zone planning and key points.Combining with planning practice,we propose solutions for the technical problems such as the choice of port industries and spatial layout,resource evaluation and capacity analysis of port economic zone,as well as the coordination of multiple plans,etc.