PURPOSE: To provide a guard bar installation structure for automobile which can lighten the transmission of the impact to a car body when the impact is inputted onto a guard bar and improve the breakage resistance of the car body.

CONSTITUTION: As for a guard bar installation structure for an automobile which has a gate shape on the front surface and an L-shape on the side surface and is arranged, covering the front surface part and/or the rear surface part of a car body, a support member 5 is suspended between the front surface part of the car body and/or the car body 7 at the rear surface part, and a stay 13 is suspended between the support member 5 and the side part 1a of a guard bar 1, and the lower end part 1b of the guard bar 1 is fixedly installed on the car body 7.