A solar cell module comprising a solar cell element, an electroconductive outer portion, and an electric wire with a plurality of cores having a module connector at an end portion thereof, at least one of the cores being connected to an electric connection portion for leading the power of the solar cell element out, at least one of the cores being electrically connected to and in conduction with a grounding portion, wherein the module connector has a plurality of poles each electrically connected to a corresponding one of the plurality of cores such that when the module connector is engaged with an outer connector, at least one of the plurality of poles of the module connector in conduction via a corresponding one of the plurality of cores with the grounding portion is connected to a corresponding one pole of the outer connector, and then the other of the plurality of poles of the module connector in conduction via a corresponding one of the plurality of cores with the electric connection portion is connected to a corresponding one pole of the outer connector.