It is mainly based on clinical symptoms, physical examination and imaging to determine whether there is lumbar disc herniation. 1. Clinical symptoms, long-term pain in the lumbar region and radiating to the lower limbs. When you sit up on your back, you feel pain in your lower limbs, hold your waist with your hands, and feel numbness, pain and coldness in your legs when you sit up on your back, with your hips protruding to one side. When coughing gently suddenly feels his back pain aggravated. The spine has pressure pain and other symptoms. 2. Physical examination: mainly positive straight leg raising test and straight leg raising enhancement test. There are sensory and motor disorders in the corresponding innervated areas, and sometimes there is a decrease in muscle strength of the limbs in the innervated areas. 3. Imaging examination: lumbar disc herniation is defined morphologically or imagingly and needs to be judged by MRI or CT examination. The lesions in the nucleus pulposus tissue can be clearly seen on CT and MRI images. If the above symptoms occur, this may be suffering from lumbar disc herniation, and you should go to the hospital to do X-ray or CT examination in time to avoid missing the best time for treatment.