Regarding the problem of how to formulate a reasonable development path and development strategy under the background of port enterprise transformation and upgrading，this paper studies the development direction of coastal port enterprises in China in terms of transformation and upgrading during the 14th Five-Year Plan period.After analyzing the current development stage of coastal port enterprises，the paper adopts the trend analysis method and empirical reference method and proposes that the key direction of the transformation and upgrading of coastal port enterprises during the 14th Five-Year Plan period should mainly focus on strengthening the main business of ports，diversifying business，and developing port supply chain services.In addition，it is necessary to formulate appropriate specific measures based on the direction considered promising by large，small，and medium-sized port enterprises and their self-conditions.The conclusion provides a reference for the transformation and upgrading of port enterprises during the 14th Five-Year Plan period.