In a teaching method for an industrial robot having a hand on which a conveyance object is to be mounted, the teaching method includes a positioning member attaching step in which a positioning member for determining a position of a conveyance object to be mounted on the hand in a horizontal direction is attached to an upper face side of the hand and, after that, a teaching step in which the hand is moved to a predetermined position to perform teaching for the industrial robot, and after that, a positioning member detaching step in which the positioning member is detached from the hand. When the conveyance object is mounted on the hand in a state that an end face of the conveyance object is contacted with the positioning member, the conveyance object is disposed at a normal mounting position on the hand.