Groin pain, leg pain, numbness, consider the lateral femoral cutaneous nerve entrapment syndrome, lumbar disc herniation, pear-shaped muscle syndrome and other reasons. 1. Lateral femoral cutaneous nerve entrapment syndrome: the nerve course is compressed, which can be seen in trauma, bone fracture, tumor and other factors, mainly manifested as pain in the groin area of the anterior femoral side, with burning sensation, local numbness, sensory hypersensitivity, and the symptom is aggravated when stretching the hip joint afterward. The diagnosis can be clarified by radiography or electromyography. 2. Lumbar disc herniation: the herniated nucleus pulposus compresses the nerves, which can involve the groin pain and leg pain and numbness, and the lumbar spine MRI film can be clearly diagnosed. 3. Piriformis syndrome: swelling of the piriformis muscle and compression of the nerve can radiate pain to the groin. So groin pain and leg pain numbness consider the above reasons, need to go to the hospital for examination and treatment.