Toe nail bumped into the bruise black injury early local cold compresses, 48 to 72 hours later can be changed to hot compresses, but also local application of safflower oil and other blood stasis (to promote blood flow, eliminate blood stasis) of the drug. Toe bruise is due to trauma caused by soft tissue damage under the nail bed, resulting in local capillary rupture bleeding, under the nail bed of the bruises lead to black nails. 1. Cold compress: In the early stage of injury, cold compress can be applied to the injured part to relieve pain and make the local capillaries contract to reduce bleeding. 2. Hot compress: After 48 to 72 hours after the injury, it can be changed to local hot compress to promote the absorption of subcutaneous bleeding in the nail bed and local blood circulation to reduce subcutaneous bruising. 3. Medications: After the injury, you can use safflower oil and other medications under the guidance of the doctor to help the absorption of blood stasis. In addition, but also to keep the local clean, dry, to ensure that the patient has a good state of nutrition, bruises with time can also be naturally absorbed. Toenails hit the bruise black recommended timely medical treatment, under the guidance of a professional doctor standardized treatment, so as not to delay the condition.