There are many clinical causes of left buttock soreness, such as strenuous exercise, arthritis, femoral head necrosis, as follows: 1, caused by local muscle strain caused by recent strenuous exercise, patients can locally apply hot compresses and massage, or topical application of ointment that activates blood circulation and relieves blood stasis, such as blood circulation and pain cream, which will slowly get better; 2, the local presence of arthritis, such as hip synovitis, hip joint osteoarthritis will cause Left buttock soreness, the patient can apply hot compress locally and take oral blood circulation and blood stasis, anti-inflammatory and analgesic drugs for treatment, such as blood circulation and blood stasis capsule, Nimesulide capsule; 3, femoral head necrosis can also cause local muscle strain, making the patient appear buttock soreness symptoms.