In order to study the influence law of friction force on the buffering performance of landing gear, a certain type of aircraft strut—type hybrid landing gear was taken as the research object. By building a special test platform, simulation tests were carried out on the landing gear buffers under different working conditions, and key parameters such as the buffer stroke and vertical load of the landing gear under various working conditions were accurately measured and recorded. The results show that the friction force has a significant impact on the buffering performance of the landing gear buffer. Within a certain range, the increase in friction force will change the energy dissipation mode of the buffer, cause changes in the buffer stroke, and thus affect the buffering effect. An in—depth analysis of the internal relationship between the friction force and the buffering performance is helpful for optimizing the design of the landing gear buffer, improving its reliability and safety in actual use, and providing important theoretical and experimental basis for the performance improvement of the aircraft landing gear system.