Abstract: The present invention provides a suspension device. A U-shaped rope-penetrating part is arranged on a suspension body; the U-shaped mouth of the U-shaped rope-penetrating part together with the suspension body form a rope-penetrating hole; a suspension hole is set in a position to one side, and a control handle which controls the deflection of the suspension device is also provided. When the human body is independently borne by the suspension hole, the fixed end and the free end of the suspend rope are pressed tightly with each other to prevent the suspend rope from sliding; the human body is suspended on the high, and the suspension device is in a self-locking state. When the human body exerts pulling force on the suspension device through the control handle, the suspension device deflect, at this time, the human body begins to descend with the rope sliding.