The landing gear of the aircraft is related to the smooth take-off and landing of the aircraft, and is the most basic guarantee to ensure flight safety. Therefore, the maintenance of the aircraft landing gear is particularly important, and the aircraft maintenance technicians must do a good job in this area. In order to improve the quality of aircraft landing gear maintenance work, this paper summarizes the common faults of aircraft landing gear components, analyzes the main reasons for the failure, and puts forward relevant solutions for aircraft landing gear maintenance.