If a patient’s finger nail is smashed and then becomes locally purple, different clinical treatments are often available depending on the severity of the local injury and whether the nail and nail bed are separated. A. If the patient’s finger nail is smashed to a more serious degree, accompanied by extensive bruising, the nail and nail bed have separated. It is recommended that the nail be removed under local anesthesia to remove the bruising under the nail. The nail can be dressed with topical growth factor or Yunnan Baiyao powder and sterile gauze, and the nail can grow slowly in most patients in about two weeks. If the patient’s fingernail is smashed to a minor extent, the local bruising is limited and the nail and nail bed do not appear to be separated. You can shrink the capillaries by applying ice continuously to avoid the expansion of local bruising. At the same time, oral bruising pills and other drugs can promote the absorption of local bruising faster, so that the injured soft tissues return to normal sooner.