It takes at least 2 months for the nucleus pulposus to retract, and at least half a year for it to be completely absorbed. The main factor for disc herniation is the rupture of the annulus fibrosus, which causes the nucleus pulposus to protrude from the disc. Since the herniated disc or nucleus pulposus compresses the nerve roots or the spinal canal, and since the release of nucleus pulposus factors produces a series of chemical reactions that cause the clinical symptoms, appropriate treatment of the disc or nucleus pulposus can improve the discomfort symptoms. The “retraction” or “resorption” of the nucleus pulposus can mean the elimination of nerve root irritation, and is therefore beneficial for the restoration of spinal mechanical imbalances and the relief of symptoms. In particular, studies have shown that it takes at least 2 months for the nucleus pulposus to retract and at least 6 months for it to completely resorb. For the observation of nucleus pulposus retraction and resorption, mainly using MRI, the treatment measures to promote the retraction and resorption of the nucleus pulposus are based on conservative treatments, such as rest and braking, lumbar spine traction, and oral medication as prescribed by the doctor.