Through forming process selection, mould structure design and process parameters optimization, the near net shape forming of the thin-walled profiled resin matrix composite is explored. The results show that the injection molding overcomes the problem that the charging chamber is narrow and difficult to load in the tradional molding process, and then, realize the near-net shape forming of thin-walled profiled resin matrix composites, which greatly improve the material utilization, reduce the difficulty of processing and shorten the molding cycle.