In the modern living environment, the incidence of lumbar and cervical spine diseases is high in the population. According to Chinese statistics these patients account for about 20% of the total number of patients. PLDD is the latest method of treating herniated discs in the world. This method uses a slim fiber to send out pulsed laser light to vaporize the herniated discs and remove the compression on the nerves to achieve treatment. It has the characteristics of no bleeding, little damage, fast recovery and high safety, and the procedure takes only half an hour, which is a blessing for the majority of patients.