Abstract: Based on the current production organization mode of aircraft skin industry, the value flow chart of skinning parts production line is drawn, and problems such as the bottleneck position, rough production plan and long period of the fine machining of sheet metal, etc. are analyzed. Drawing on the theory of lean production, measures for production efficiency improvement are proposed, covering three aspects including pull-type production, bottleneck position optimization, and process optimization. It has been found that productivity is increased by 26.8%, and the delivery cycle of aircraft skin parts shortened by 30%, producing an annual direct economic income of 551 000 RMB.