A solar battery module device includes a solar cell module (20) having plural solar battery cells arranged thereon; a substantially rectangular rack-shaped frame (10) supporting an outer-edge portion of the solar cell module (20) by surrounding a whole periphery of the outer-edge portion; and a reinforcing frame (3) that is bridged over between opposite two sides of the rack-shaped frame (10) by forming a predetermined gap between the reinforcing frame (3) and a back surface of the solar cell module (20), and supports the solar cell module (20) by being brought into contact with the back surface of the solar cell module (20) when the solar cell module (20) is bent. Because the reinforcing frame (3) is engaged with engagement notches (1d) formed on the back surface of the rack-shaped frame (10), the reinforcing frame (3) can be easily fitted.
