1, can achieve the purpose of radical treatment: collagenase has specific solubility, which can dissolve the collagen in the protruding lumbar disc tissue, release the compression on the nerve root and eliminate the inflammation that causes pain. 2.High safety: Under the monitoring of X-ray fluoroscopy or CT, a doctor with formal training can avoid other tissues such as nerves and blood vessels and enter the injection site accurately. 3, not easy to recur: the prominent nucleus pulposus is dissolved and absorbed, after the operation, pay attention to the rest of the rehabilitation exercise, generally not easy to recur. 4.Little injury and pain: the operation under local anesthesia has an incision only the size of a needle eye, which can heal quickly. No damage to the bone and ligaments, maintaining the original structure of the human body, can maintain the stability of the lumbar spine. 5.Short hospitalization time: generally 3-5 days in hospital. 6.Light burden: compared with open surgery, it reduces the mental and economic burden of patients. 7.As a biochemical method, except for collagenase chemolysis which can be better used in combination with other physical methods, compared with other physical methods, it is undeniably far more mature than other methods only from 20 years of clinical application and 300,000 de patient statistics.