Abstract: The mechanical properties of the bonded parts treated by grinding, phosphoric acid anodizing and AC-130-2 were stuied, and the reasons for the differences were clarified by energy dispersive spectrometer (EDS), contact angle and scanning electron microscopy (SEM). Combining with the average time consuming of different repair methods, the basis for aircraft classification maintenance were provided. The results show that the bearing capacity of the test parts was restored to 80.27% of the original structure, the fatigue is only 1.6 times of the damaged parts, and the average time is about 35min, which could only meet the requirements of emergency repair of the structure. The porous structure of phosphoric acid anodized surface makes the mechanical properties batter, but the operation is complicated and it costed 118 min, which is suitable for the repair of aircraft skin and other structures. AC-130-2 could be formed on the surface of aluminum alloy composite layer, failure load could recover 92.42%, the fatigue life could be increased by 11024 cycles.It could be widely used in the repair of aluminum alloy structure of different grading maintenance.