To provide a suspension mounting structure of a vehicle capable of being mounted on a vehicle body by rigid structure and easily performing a mounting work.

This structure includes a shock absorber housing panel having an upper end connected to a front apron member and a lower end connected to a front side member, front mounting rail and rear mounting rail arranged in each of front and rear directions of a vehicle to form closed cross section together with the shock absorber housing panel, a front mounting bracket provided to fix a weld nut together with the front mounting rail, and a rear mounting bracket provided to fix the weld nut together with the rear mounting rail.