Rearview mirror installation structure on vehicle door

The invention relates to a rearview mirror installation structure on a vehicle door. The rearview mirror installation structure comprises a rearview mirror reinforcer, a reinforcing support, a front door window frame upper chute, a vehicle door hinge reinforcer, a vehicle door hinge nut plate and an inner vehicle door panel, wherein the left part of the rearview mirror reinforcer is an outer installation surface, and the right part of the rearview mirror reinforcer is an inner installation surface; the middle of the upper part of the rearview mirror reinforcer is connected with the front door window frame upper chute through shielded welding; the outer installation surface is fixedly connected with one side of the front door window frame upper chute through two sections of shielded welding; the inner installation surface is fixedly connected with the other side of the front door window frame upper chute; the reinforcing support adopts an L-shaped structure, comprises a welding surface at the lower part and matching surfaces at two ends of the upper part respectively, is inlaid in a hole where the front door window frame upper chute and the rearview mirror reinforcer are matched and is connected with the rearview mirror reinforcer through spot welding, the two matching surfaces are in clearance fit with the front door window frame upper chute, and a sealant is applied to matching parts. The rearview mirror installation structure can improve the rigidity of a rearview mirror installation point and solve the problems of jitter of the rearview mirror in a vehicle traveling process and production of wind noise during high-speed traveling of the vehicle.