Walking thigh pain can be caused by trauma, tumors or soft tissue lesions, which require relevant tests to rule out. If there are no such diseases and no trauma, we need to see if there are other symptoms in combination, such as scoliosis, low back pain or radiating pain. If there are any of these problems, an MRI or CT of the lumbar region is needed to find out if there is any compression of the nerve roots. Under normal circumstances, thigh pain is more often caused by muscle problems, most commonly probably pelvic malalignment, sacroiliac arthritis, etc., which cause tension in the pear-shaped muscles and stimulate the sciatic nerve and appear. Leg pain caused by abnormal posture due to long-term bad habits or after prolonged walking is more likely to be caused by fascial fatigue and strain in the leg.