The invention relates to a suspender, aiming at the defects that the conventional 8-shpaed ring suspender is difficult in self-locking and has potential safety hazard in use. According to the suspender provided by the invention, a U-shaped threading piece is arranged on a suspender body, a U-shaped port of the U-shaped threading piece and the suspender form a threading hole, a thread passing piece is arranged on the back surface of the U-shaped threading piece on the suspender, a threading seam is arranged on the lower side of the thread passing piece, a suspending hole bearing the weight of a human body is arranged by being inclined towards one side. An operating handle for controlling the inclination of the suspender is further arranged, when in use, a work rope is threaded from the threading hole and the threading seam in sequence and bypasses the thread passing piece on the back surface, the fixed end of the work rope is fixed at the high position, and the free end of the work rope drops to the low position, and the human body is connected and fixed with the suspending hole; when the human body is supported and suspended by the suspending hole, the fixed end and the free end of the work rope are mutually pressed so as to prevent the work rope from sliding, and when the human body is suspended and stopped at high position, the suspender is in a self-locking state; and when the human body applies pull force to the suspender through the controlling handle, the suspender deflects so that the pressure between the fixed end and the free end of the work rope is reduced, or the fixed end and the free end are separated, the rope slides downwards and the human body descends.