A rectangular protective frame for a solar cell module is disclosed. The rectangular protective frame for a solar cell module includes: four bar elements, each including: a supporting portion, having an L-shape cross-section, encompassing edges of the solar cell module for supporting the solar cell module; and a body portion, having a rectangular cross-section with a long side connected to the supporting portion for increasing strength of the supporting portion. The rectangular protective frame also includes at least one carrying mechanism, connected to a short side of the body portion of at least one of the four bar elements, having an L-shape cross-section, for preventing fingers from slipping off while carrying the rectangular protective frame.