There is no such thing as the fastest way to reduce swelling and bruising in 3 days. But after a bruise, pain, swelling, bruising and other discomfort is strong, through appropriate treatment can promote the absorption of swelling and bruising subside. Including cold compresses, hot compresses and medication. 1. Cold compress: cold compress within 24 hours after the limb is damaged, the time period, the broken capillaries will ooze blood, so the local swelling and bruising will be gradually serious, so the purpose of the cold compress is to condense the capillaries to stop the bleeding. 2. Hot compress: after 24 hours, most of the capillaries have healed, so hot compress can promote blood circulation, absorb the blood and slow down the symptoms. 3. medication: medication can be under the guidance of the doctor to choose safflower oil or tincture of swelling and pain relief and other drugs. The medication can be applied with certain massage techniques, which can help the healing process. If the bruise, bruising and swelling is more serious, you need to go to the hospital in time, so as not to aggravate the condition due to improper personal operation.