Meniscus injury is a disease with limited pressure pain in the knee joint, some patients have the phenomenon of playing soft leg or knee joint interlocking, quadriceps atrophy, and limited pressure pain fixed in the knee joint gap as the main manifestation. The treatment of meniscal injury is as follows: 1) cold compresses can be applied during the acute phase to reduce bleeding, pain and symptoms, and shorten the acute reaction period; 2) suspension of activities and rest; 3) for those with interlocking phenomenon, the knee joint can be unlocked by moving under the guidance of a doctor; 4) treatment during the chronic phase, as the injured and ruptured meniscus cannot heal, its interlocking phenomenon of pain and swelling will occur frequently. In order to reduce and prevent the adverse consequences of bone, cartilage, synovial lesions and eventually osteoarthritis secondary to meniscal injury, arthroscopic surgery is preferable at an early stage; 5, non-steroidal anti-inflammatory drugs such as ibuprofen and aspirin can be taken to reduce the pain caused by meniscal injury; 6, if herbal fumigation, local closure and physiotherapy are used, they should be carried out under the guidance of a specialist.