This electric apparatus mounting device includes: a robot side contact jig which is provided to an end effector mounted to an arm of a robot and which has a robot side contact; and an electric apparatus side contact jig which is detachably provided to an electric apparatus and which has an electric apparatus side contact electrically connected with the electric apparatus. The robot side contact jig and the electric apparatus side contact jig are configured such that the robot side contact and the electric apparatus side contact are in a connection state in a state that the electric apparatus is held by the end effector. Thus, a work for conveying and mounting an electric apparatus such as a motor to a given position using a robot can be performed without hindrance.