Femoral head effusion, understood here as hip joint effusion around the femoral head, is generally considered synovitis, mostly caused by excessive sports or compound activities, in terms of treatment, need to reduce sports, physiotherapy, etc., as follows: 1, reduce sports: If synovitis occurs, resulting in hip joint effusion, must reduce sports, especially to reduce weight-bearing activities, such as avoiding up and down stairs, carrying very heavy school bags This can reduce the load on the femoral head and reduce the effusion of fluid. 2. Physical therapy: Physical therapy can be used, such as local hot compresses, infrared irradiation, and also ultrasound or magnetic therapy, which can improve the blood circulation around the femoral head, speed up the absorption of fluid and reduce the effusion of synovial membrane, thus avoiding the painful symptoms caused by fluid accumulation.