Knocked knee will be better faster if you choose treatment plan according to the degree of injury, such as cold compress in early stage, hot compress in late stage, debridement, surgical suture, and so on. 1. Ice and hot compresses: After knee injury, if the local skin is intact and there is bruising and swelling under the skin, ice compresses can be applied within 72 hours after the injury to help reduce the local blood seepage, and hot compresses can be applied at a later stage to promote the dissipation of the bruise. 2. Cleansing, suturing and medication: For knee injury, if the skin is broken and bleeding, and the amount of bleeding is small, povidone-iodine can be used to disinfect the wound to prevent infection and help promote the recovery of the wound. If there is more bleeding, you can choose to use Yunnan Baiyao and other drugs to stop bleeding after disinfection. If the wound is deeper, stitches will be needed if necessary. Before the knee injury is completely healed, the wound should not be exposed to water too soon, otherwise it is easy to cause infection. Keep the wound hygienic and clean, and pay attention to dietary supplements, such as vitamins and protein-rich foods, during the healing process. Specific wound treatment needs to be carried out by a doctor.