A herniated lumbar disc can be treated with traction, specifically because a herniated lumbar disc is a nucleus pulposus protruding posteriorly or medially, compressing the spinal cord and nerve roots and producing the corresponding clinical symptoms. The herniated nucleus pulposus causes protrusion due to excessive pressure. Traction therapy can be used to enlarge the narrow lumbar spinal space so that the pressure on the nucleus pulposus is reduced, which is conducive to nucleus pulposus rejection and can release the nerve compression. If it is a severe nerve compression, it can only partially relieve the clinical symptoms and requires surgical excision for complete resolution. For patients with mild to moderate lumbar disc herniation, lumbar traction therapy can be used to provide significant relief of clinical symptoms. Patients can also use a bar for suspension to play the role of traction, which can also play a similar therapeutic role, so the use of traction therapy for patients with lumbar disc herniation is beneficial.