Ice packs can generally be applied within 72 hours of a meniscus injury. Meniscus injury may have tissue swelling, congestion, inflammatory response and local blood vessel bleeding, generally will be recommended within 72 hours of injury to the injured area of ice packs, can shrink the local blood vessels, effective pain relief, reduce swelling, reduce bleeding, reduce inflammatory exudate. Injury more than 72 hours after the general will not recommend ice packs, at this time should choose hot compresses, hot compresses can activate blood circulation, promote local blood circulation, promote the absorption of inflammation and hematoma. When applying hot compresses, attention should be paid to the temperature should not be too high to avoid burns. Meniscus injury should go to the hospital in time, under the guidance of the doctor for cold compresses, hot compresses and other treatment methods.