A fixing frame for a solar energy module includes a frame body having inserting grooves for a supporting board and a locking chute for a solar panel, wherein the locking chute contains locking flanges. An I-shaped supporting board is installed into the inserting grooves of the frame body so that it can efficiently resist external forces. During assembly, the solar panel is inserted into the locking chute of the frame body and its top edge and bottom edge are secured by the locking flanges of the chute to ensure stability and high force resistance.