Knee sprains can be recovered in 1-2 weeks if the sprain is only a general soft tissue tendon sprain. But after the knee sprain, it may cause meniscal damage to the knee joint, so pay attention to the local pain and swelling. If the pain is only around the knee joint, mainly ligament damage, you can spray some swelling and pain aerosol, in addition is to choose creams, such as flurbiprofen babu cream. Pay attention to rest and avoid walking long distances for the time being. If there is significant relief in a week or so, it is usually not a big problem. However, if the knee swelling is obvious, and the pain is accompanied by pressure, or if there is no significant improvement after 1-2 weeks of rest, you should pay attention to the meniscus that was damaged during the knee sprain. At this time, you need to see a doctor in a timely manner and make a preliminary judgment in combination with physical examination. An MRI can be performed on the knee to determine if there is significant meniscal damage and the extent of the damage.