Generally speaking, pain after knee exercise can be recovered by cold compress, hot compress and medication. 1. Cold compress: knee pain after exercise, the patient should immediately brake to rest, within 72 hours of the use of cold compresses, such as cold towels or ice packs on the knee part of the local cold compresses for 20 to 30 minutes, 2 hours later can be repeated, the low temperature can be caused by vasoconstriction, slowing down the local blood circulation, can play a role in reducing the local swelling and pain purposes. 2. Hot compresses: 72 hours after the injury can be hot compresses, such as hot towels or warm water bags, etc. on the knee part of the local hot compresses, promote blood circulation, accelerate the local metabolism so as to reduce lactic acid and other acidic products on the soft tissue stimulation, reduce pain, promote inflammation absorption. 3. Medication: non-steroidal anti-inflammatory drugs such as ibuprofen and diclofenac sodium can play an anti-inflammatory and analgesic role, thus reducing pain and relieving knee swelling. Knee pain after exercise can lead to meniscus or ligament damage in severe cases, so patients are advised to consult a doctor in time for a clear diagnosis and targeted treatment.