Running hip pain is the manifestation of hip pain, part of the physiological factors, excluding physiological factors, and the hip joint around the condition of the abnormalities closely related, including ischemic foci of necrosis of the femoral head, osteoarthritis of the hip, infections, tumors, as well as lumbar intervertebral disc herniation compression of the nerves. 1. Physiological factors: during running and strenuous exercise, the excessive amount of exercise causes the accumulation of lactic acid in the surrounding muscles, which will cause painful and uncomfortable symptoms. 2. Ischemic necrosis of the femoral head: Ischemic necrosis of the femoral head can cause aseptic inflammation around the femoral head, and its own weight-bearing capacity decreases, which can cause bone damage and pain during running. 3. Hip arthritis: it is related to congenital acetabular development abnormality, degeneration and immune factors, and it causes joint wear and tear, impact and other stimulation of the peripheral nerves during exercise, causing pain. 4. Infection: mainly belongs to the joint inflammation caused by infection, there will be fluid accumulation and thickening of synovial membrane around the joint, and the pain is caused by nerve irritation during exercise. 5. Tumor lesion: Tumor around the joints, during the running process, because of the joint activities, the stimulation to the tumor will cause pain. 6. Herniated lumbar intervertebral disc: Herniated lumbar intervertebral disc will aggravate the nerve compression during running, which will cause pain and discomfort in one side of hip joint after exercise. There are many reasons for obvious hip pain during running, which can’t be relieved all the time, and it is necessary to consult a doctor in time for observation and regular treatment under the guidance of a clinician.