To provide a collision test device for a body frame of a truck having established a method for performing a bench test of only a body frame, without using an actual truck.

The collision test device includes: a jig frame for fixing the body frame with the tip side of the body frame projected forward; a travelable dolly on which the jig frame is put; a collision barrier installed ahead of the dolly; a collision means for moving the dolly and causing the tip side of the body frame to collide against the collision barrier; and a protection means for stopping and protecting the dolly after the collision of the body frame with the collision barrier. To the body frame projecting forward from the jig frame, there is fitted a frame mounting article or a mounting bracket for the frame mounting article.