Abstract: Mo was added to Ti C reinforced Inconel718 composite, and aging treatment was adopted after spark plasma sintering. The effects of aging treatment on the microstructure, phase composition, hardness, corrosion resistance and oxidation resistance of Mo doped Ti C/Incone1718 composite were analyzed. The results show that the light gray bands in Ti C/Incone1718 composites become thicker, the Ti C in Incone1718 matrix tends to disperse, the degree of segregation decreases, and a large amount of Ti C is wrapped by Mo and enters the interface of Incone1718 matrix with the increase of Mo content. After aging treatment, the distribution of phases in Mo doped Ti C/Incone1718 composite is more uniform, and the secondary phase MoC precipitates at the grain boundary, which has a certain strengthening effect on the composite. The precipitation of carbide at the grain boundary promotes the increase of the galvanic effect in the micro area to a certain extent,leading to the weakening of the corrosion resistance of the composite. However, the enhanced bonding at the interface prevents the corrosion of chloride. Its passivation tendency reduces the anodic metal dissolution of the composite, counteracts the galvanic effect caused by the precipitation phase, and reduces the corrosion rate of the material. The internal defects of the composite are reduced, the thermal stability is enhanced, and the oxidation resistance is improved after aging treatment.