Provided is a terminal box that allows easy insertion of a tab thereto, irrespectively of the position or direction of the tab extended from a solar cell module. A terminal box with a pair of tabs connected thereto for outputting electric power generated by a solar cell module, includes a case having an accommodating space therein and a pair of electrode plates disposed in the accommodating space. Each one of the pair of electrode plates has a terminal connecting portion to be connected with the tab and a cable connecting portion to which an output cable transmitting the electric power to an external device is connected. The case has tab inserting holes allowing insertion of the tabs into the accommodating space, the tab inserting holes being formed in an opposing face of the case opposing the electrode plates and at positions across the terminal connecting portion of at least one of the pair of electrode plates as the case is viewed perpendicularly above the opposing face.