Compared with traditional materials such as metals, polymer-based composite materials‘ high-temperature resistance and corrosion resistance to abrasive wear performance of solid particles are insufficient, leading to the application of polymer-based composite materials in complex working conditions such as high-tech fields, high-temperature wear and other serious constraints. It has shown that the preparation of functional protective coating on polymer-based composite surface is a way to improve or change the surface performance of composite materials. Based on the introduction of the basic properties of polymer-based composites, The system summarizes the hot spray, cold spray and solvent-gel method, Surtechnology of 3 types of functional protective coating at home and abroad on the surface of polymer based composites; Combing different surface technology deposition polymer matrix composites are summarized three kinds of main protective coating surface, namely, high temperature resistant coating, solid particle erosion wear resistance coatings, For example, arc spraying and cold spraying are mainly deposited on the surface of the polymer-based composite material with metal coating; By analyzing the mechanism, performance, advantages and disadvantages of various techniques, And the causes of failure of the coating, Point out how to maintain the surface integrity during the substrate pretreatment process, how to improve the binding strength of the coating and the substrate, how to effectively deposit the ceramic coating, etc., It is a key technical problem in the polymer composite, It is also the key work in the follow-up research.