You can determine whether you have a lumbar disc herniation from your medical history, symptoms, physical examination, and imaging tests. 1. Medical history: What kind of work is the patient engaged in, when the lumbar pain and leg pain appeared, whether there is a history of lumbar spine trauma and lumbar spine overactivity, etc. The symptoms are mainly lumbar pain and sciatica. 2. Symptoms: Symptoms are mainly lumbar pain and sciatica. There are radiating pains in the waist, buttocks, thighs, calves and feet, accompanied by numbness and weakness, and in severe cases, there are muscle atrophy in the lower limbs and decreased muscle strength in the flexed toes. 3. Physical examination: that is, through some special examination methods, the general judgment of the condition. Straight leg raising test and strengthening test can be done. If pain or numbness occurs in the sciatic innervated area when the leg is raised within 70°, the test result is positive and lumbar disc herniation is considered. Through the lumbar pressure and pain points and lower limbs with sensory loss areas, etc.. 4. Imaging tests: such as X-ray, CT, MRI, etc. These tests can make judgment on the condition as well as the severity. If the patient has lumbar and leg pain, he should go to the hospital in time, and the physician will judge the condition from the above aspects.