Only 2 cases that the aircraft parts made by metal additive manufacturing have been authenticated by profes-sional authority worldwide. On the contrary, additive manufacturing parts made by polymer additive manufacturing have been used about 20 years long formally by Boeing Airplane, the cumulative total of more than 100000 units. Deeply integrating the additive manufacturing technology and aviation industry, making overall planning and do the top-level design well, attaching equal importance to both polymer and metal additive manufacturing technology to make aircraft parts directly, these are the key point to promote healthy and sustainable development of additive manufacturing industry .