A frame structure for solar cell module, in which each of the four sidebars that constructs the frame structure is comprised of a bottom, a first vertical wall, a second vertical wall, a first horizontal wall and a second horizontal wall. Substantially, the present invention provides a a frame structure constructed using parts of different curvatures, that is capable of preventing any filling material from overflowing on the front side of a solar cell element during the integration of the solar cell element and the front structure, without having the so-constructed solar cell module to be processed by an additional machining process for processing the overflowed filling material after the integration, and thus not only the sidebars of the frame structure can be prevented from being broken by the stress resulting from the machining process, but also the manufacturing time required for the consequent solar cell module can be reduced.