Thigh root inside pain when walking, there may be the following reasons: first, hip impingement syndrome, when the acetabulum of the hip joint and the femoral neck impingement, or the sciatic tuberosity and the femoral neck of the small roughness of the femoral neck of the impingement, there can be a pain in the thigh root inside pain when walking, to carry out the X-ray film of the hip joint, the nuclear magnetic examination, to carry out the early diagnosis and treatment. Second, femoral head disease, when the femoral head necrosis, can appear when walking inside the thigh root pain, to carry out the femoral head of the CT, nuclear magnetic examination, for early diagnosis and treatment. Third, inflammatory diseases, when the hip joint has osteoarthritis or tuberculosis, Borrelia burgdorferi infection and other diseases, can also appear when walking inside the thigh root pain, to early blood tests, as well as hip X-ray film, CT, nuclear magnetic examination for early diagnosis and treatment. Fourth, tumor, if there is a tumor in the bone or soft tissue of thigh root, the symptom of pain in thigh root when walking can also occur, and early nuclear magnetic examination can be used for diagnosis.