Abstract: Laser deposition repair of ZL102 Alloy was carried out using ZL114 alloy powder. For the non-uniform microstructure of laser deposition repair specimens, solid solution and aging heat treatment(T6:535 ℃/12 h+155 ℃/6 h) was carried out. The effects of solid solution and aging heat treatment on the microstructure, microhardness and wear performance of the repair area were investigated. The results show that the microstructure of repaired area in deposition state is mainly composed of α-Al phase and Al-Si eutectic, which is mainly distributed in a continuous network at the grain boundary. After T6 heat treatment, the repaired zone in the heat-treated state is mainly composed of α-Al phase and Si particles. The network Al-Si eutectic morphology disappears and is transformed into dispersed Si particles. The average microhardness of the heat-treated repair zone is 110.1 HV0.3, which increases by 47.4% than that of the deposited state. The friction coefficient and wear mass loss are 0.5 mg and 0.4 mg, respectively, which decrease by 16.7% and 63.6% than that of the deposited state. T6 heat treatment effectively improves the hardness and wear resistance of the repair area.