Most of the finger smashed with bruises will be self-healing, if there is a secondary infection, there may not be self-healing. 1. The situation will be self-healing: finger bruises, is due to external pressure, resulting in subcutaneous capillary rupture, blood in the subcutaneous pooling caused by the phenomenon of bruising. If the skin is not broken and there is no secondary infection, most of them will be absorbed by the metabolism and will be healed by themselves. 2. Can not be healed: If the skin is broken, there are wounds, there may be secondary bacterial infection and other complications, the body is weak or the body has chronic diabetes and other diseases, may not be able to heal, and even cause osteomyelitis of the finger bone, it is more difficult to heal. Fingers were smashed bruises, should go to the hospital in time for examination and treatment.