Foldable fastening bolt

The invention discloses a foldable fastening bolt, relates to the related field of bolts, and aims to solve the problem that folding protection cannot be performed on the connecting positions of the bolts in the prior art. A rotating ring is arranged in a folding handle, is arranged in a circular ring shape and is attached to the folding handle; rotating holes are formed in the folding handle andthe rotating ring; a screw is arranged at the lower end of the rotating ring and is fixedly connected with the rotating ring; a damping spring is arranged on the outer side of the screw; a plurality of first anti-skid strips are arranged on the folding handle and are fixedly connected with the folding handle; the distance between every two adjacent first anti-skid strips is set to be consistent; anti-skid lines are arranged on the first anti-skid strips; a fixed rotating shaft is arranged in the rotating ring and penetrates through the folding handle and the rotating ring; the folding handle is connected with the rotating ring through the fixed rotating shaft; and an upper ring sleeve is arranged at the upper end of the damping spring.