Finger bruise black with tingling sensation consider trauma, frostbite, limb gangrene. 1. Trauma, if the finger trauma local bruising black with tingling sensation, film to exclude fracture, then consider soft tissue injury, subcutaneous bleeding. Local ice can be applied, and if there is much blood, incision and drainage can be performed. 2. Frostbite, due to cold stimulation caused by poor blood circulation. Attention should be paid to keep warm and apply frostbite cream. 3. Gangrene, due to vascular disease or complications caused by diabetes mellitus, the finger bruises black. Apply vasodilating drugs, such as sodium beraprost. In severe cases, surgery is needed to clean up the necrotic tissue. Finger bruises black with tingling sensation need to go to the hospital in time to check the cause of clear treatment as soon as possible.