The invention belongs to the wireless self-organizing network technology of avionics information, and is an implementation method of a media access control (MAC) protocol based on multi-service QoS guarantee for high-load aviation networking communication environments, and is applied to the field of aviation wireless communication networking. The purpose of the invention is to provide a method for implementing an aviation ad hoc network MAC protocol and a system for implementing the method, which optimizes network service transmission performance through a distributed access request decision mechanism and a QoS guarantee backoff mechanism, and improves the utilization rate of shared channels across the network. At the same time, the present invention maintains the number of nodes in one hop for a single node simultaneously communicating, ensuring network stability and maintaining network traffic at a reasonable level. 1. Functional indicators: (a) Distributed access request function: realizes the initial admission mechanism for service data channel access; (b) Backoff processing function: determines the node's service transmission waiting time based on channel busy and idle statistics; (c) Channel busy and idle statistics function: completes channel busy and idle statistics; (d) Service priority queue management function: completes frequency table update based on channel busy and idle conditions. 2. Performance indicators: (a) Service category: ge;3; (b) Access success rate: ge;99%; (c) Access latency of the highest priority service: le;2 ms. 3. Promotion and transformation prospects and benefit prediction: The invention brings my country's technical level in the field of aviation communication networking to a new level, and has broad promotion and application prospects. The application of this achievement will help improve the reliability and effectiveness of manned/unmanned aircraft communication networks and improve the effectiveness of collaborative tasks. At the same time, relevant technical achievements have been applied to projects such as aviation omni-directional collaborative networking communication systems, WY-6 fixed-wing drone and DET quad-rotor drone data links, which have great economic and social benefits.