Disclosed herein is a multilayer solar module installation structure. The multilayer solar module installation structure includes: a pair of frames which are spaced apart from each other, and in which guide grooves are formed through the opposite side surfaces thereof in longitudinal directions; and solar modules which are installed on upper and lower sides between the frames so that they are movable along the guide grooves, and which convert the solar energy of incident solar light into electric energy. Through this configuration, the solar modules are disposed on the upper and lower sides of the frames, thereby achieving the effect of efficiently using a solar light installation space.