Knee pain after playing soccer may be caused by knee strain, meniscus injury or knee synovitis. It can be relieved by proper rest, hot compresses, medication, surgery and other methods. 1. Knee joint strain: Knee joints are hit and rubbed during the playing process, causing knee joint strain and pain. Patients need to rest fully, and at the same time with massage, hot compresses and other physical therapy to relieve pain. If the pain is serious, you can use ibuprofen, aspirin and other drugs for treatment. 2. Meniscus injury: playing ball meniscus by external forces may produce damage, meniscus injury will appear after playing ball knee pain. Generally, it needs to be treated by braking and physical therapy, and in serious condition, it needs minimally invasive surgery for meniscus suture and meniscoplasty. 3. Knee synovitis: When the joint surface is hit by multiple impacts during ball games, the synovial tissue becomes congested and edematous, which leads to the onset of synovitis, resulting in knee pain. Anti-inflammatory and analgesic drugs can be used to relieve pain, such as bisacodyl, ibuprofen and indomethacin. Antibiotics such as nafcillin can also be used in combination depending on the condition. Exercise needs to be gradual and regular in order to achieve a strong body and avoid injury. If you have severe knee pain that cannot be relieved after playing, you need to consult a doctor in time to check your knee for any injury or other diseases and receive professional treatment as early as possible.