Knee joint knee ligament strain in the appropriate time can be hot compress, knee joint strain early that is, within 48 hours after the injury, mainly cold compress, can reduce local bleeding, reduce local swelling, dissipate local inflammation, reduce local pain, so early cold compress is a lot of benefits. After 48 hours, the local bleeding will stop, the inflammation will dissipate and the swelling will be reduced. Early knee ligament strain must be braked and rested, while applying cold compresses, and then go to the hospital for detailed examination, because in some cases more important ligament and meniscus injuries require surgery, such as the rupture of the anterior fork ligament, so the knee ligament strain must come to the hospital for detailed examination, possibly after magnetic resonance examination.