Hip pain and leg numbness may be lumbar disc herniation, pyriformis syndrome, femoral head necrosis and so on. Lumbar disc herniation is because the nucleus pulposus protrudes and compresses the nerve root, which can cause radiating pain, mainly in the lumbar, hip and hip, and some of them also have numbness, which can be diagnosed clearly through lumbar MRI films, and traction, acupuncture and physiotherapy can be applied, and serious patients also need surgery. Piriformis syndrome is caused by chronic strain or trauma, and can present with pain and numbness in the hip. The patient does hip joint adduction and internal rotation symptoms are aggravated. The diagnosis can be clarified through the MRI film of the hip. Femoral head necrosis is caused by local ischemia and necrosis of femoral head, bone collapse, causing joint pain and leg numbness, taking hip MRI film can make a clear diagnosis. There are many causes of hip joint pain and leg numbness, if the symptoms persist, it is recommended to go to the hospital in time, so as to avoid delaying the condition.