In order to improve the wear resistance of 7075 aluminum alloy. The microstructure and nanohardness of the remelting zone were analyzed by laser remelting treatment at different scanning speeds. The effects of remelting treatment on the surface mechanical properties of 7075 aluminum alloy were studied, as well as the wear behavior of different texture coverage on the surface of 7075 aluminum alloy, and the wear mechanism of micrograting texture on the remelting surface was analyzed. Laser remelting treatment has an effect on the microstructure and mechanical properties of 7075 aluminum alloy. Compared with the matrix without remelting, the hardness of the laser remelting zone is significantly improved. When the scanning speed is increased to 900 mm/s, the hardness of the remelting zone is as high as 1957.9 MPa, which is about 88.8% higher. Laser remelting surface treatment has little effect on the tensile strength of aluminum alloy, and its texture direction has obvious effect on the elongation. With the increase of texture coverage, the average friction coefficient and wear amount under water lubrication condition decrease first and then increase. The friction coefficient of 20% texture coverage is about 16.7% lower than that of the sample without remelting, and the wear amount is about 48.8% lower. The hard-soft alternating "sandwich" structure constructed by micro-grating texture can effectively inhibit the formation of large and deep spalling. It provides space for the accumulation of oxidized wear chips at the friction interface, thus effectively reducing the removal of friction pair materials, and promoting the wear mechanism from the dual damage of abrasive wear and fatigue wear to the fatigue wear represented by slight fatigue spalling. The wear resistance of 7075 aluminum alloy is further improved.