In general, lumbar disc bulge belongs to degeneration, which occurs in people over 40 years old, but most patients have no obvious pain symptoms. When the peripheral fibrous ring of the lumbar disc is cracked and the nucleus pulposus is released, it may stimulate the sinus nerve and induce discogenic lumbago, which has the following characteristics: 1. The pain of lumbar disc bulge is mild in the morning, obvious in the afternoon, and increased at night; 2. Patients with discogenic lumbago often show normal CT and MRI examinations, and the examination results may be mostly negative.