Lifting leg and hip pain may be caused by lactic acid accumulation due to excessive muscle exercise in a short period of time, or it may be a symptomatic manifestation of many diseases, such as lumbar disc herniation and hip muscle fibrositis, which should be promptly consulted to find out the cause. 1. Physiological factors: if healthy people carry out a large number of exercises using buttock muscles within a short period of time, such as deep squatting, etc., lactic acid may be produced by the anaerobic respiration of the muscles, and the accumulation of lactic acid will lead to pain in lifting legs and buttocks. 2. Herniated lumbar intervertebral disc: after the various parts of the lumbar intervertebral disc, such as the nucleus pulposus, have different degrees of degenerative changes, the nucleus pulposus tissue from the ruptured intervertebral disc annulus fibrosus prolapses in the posterior or vertebral canal, resulting in adjacent spinal nerve roots suffer from irritation or pressure, which leads to lifting leg and hip pain. 3. gluteal myofibrositis: myofibrositis refers to a series of clinical symptoms that occur due to edema, exudation and fibrous degeneration of myofascial and muscular tissues as a result of cold, dampness and chronic strain. It is a non-specific change in the body’s rich white fibrous tissues, such as fascia, myofascia, ligaments, tendons, tendon sheaths, periosteum, and subcutaneous tissues, which leads to pain in leg lifting and buttocks. Repeated, persistent leg and hip pain, and exclude physiological factors should be timely to the regular hospital, by the doctor to clarify the cause of the disease, give targeted treatment.