In recent years, China's general aviation industry has developed rapidly. With the continuous progress of modern technology, many aircraft have added many new technologies, new equipment and new materials in the manufacturing process. In the face of the current rapid development of the manufacturing process, it is urgent to innovate the level of maintenance technology, especially for the comprehensive quality of maintenance personnel and the degree of understanding of new technology, new means and new equipment have higher requirements. Based on the principles of general aviation aircraft maintenance, this paper discusses the current situation of the development of general aviation maintenance in China, and analyses and summarises the technology, means and methods related to general aviation aircraft maintenance, in the hope of effectively reducing the probability of aircraft failure, so as to better implement the policy of "decentralisation and management, mainly decentralisation" and promote the development of aviation. It is hoped that this can effectively reduce the probability of aircraft failures, so as to better implement the policy of "decentralisation and management, mainly decentralisation" and promote the development of aviation.