The pain at the root of the thigh occurs after squatting for a long time, mainly due to the following reasons: 1. pain at the root of the thigh due to necrosis of the femoral head; 2. pain due to synovial inflammation of the hip joint; 3. diseases of the lumbar spine, such as lumbar disc herniation and lumbar spine slippage, resulting in nerve compression, causing pain at the root of the thigh. After the occurrence of this situation of thigh pain, it is recommended that patients actively go to the hospital for relevant examination, to clarify which causes, and then give targeted treatment measures to treat. Because the root of the thigh appears too much.