To provide a portal industrial robot provided with two movable bodies that are moved (run) in the Y axis direction, while it is being aimed that a device is prevented from being made larger in size (space saving).

A portal industrial robot is so constituted as to be provided with a Y axis frame 18 which is extended straight in the horizontal direction, and is provided with respective supporting legs 16 at both its right and left sides, Y-axis guiding rails 20 which are extended along the Y-axis frame 18 at both its side surfaces, an X-axis frame 10 which is provided with each Y-axis movable body provided in such a way as to be freely run over the right and left guiding rails, and with an X-axis guiding rails 12 extended in the direction perpendicularly intersected with its frame under the Y-axis frame 18, and with an X-axis movable body 14 provided in such a way as to be freely run over the X-axis guiding rails 12 in the back and forth direction. In this case, Y-axis guiding rails 20 are furthermore provided for both the front side surface 18a and rear side surface 18b of the Y-axis frame 18, each Y-axis movable body is provided for both the Y-axis guiding rails 20 respectively, and the aforesaid Y-axis movable bodies comprise the step of being freely run mutually and independently.