If the finger is swollen, go to the hospital for X-ray examination, to see if there is the possibility of fracture. If exclude the fracture consider soft tissue swelling, this situation in 48 hours or less can take and take ice or cool mineral water, localized on the swollen part of the finger, which can reduce the capillary oozing, reduce the possibility of swelling. For after 48 hours, you can local hot compresses, through accelerating local blood circulation, so that the swelling of the finger gradually return to normal, or to achieve a cure. You can also spray topical medications, commonly used in the clinic are Yunnan Baiyao aerosol, etc., through the spraying of drugs can play a role in activating blood circulation and removing blood stasis, which will play a role in reducing inflammation and swelling, and the finger will naturally return to normal.