The more common sequelae of laser treatment for lumbar disc herniation include lumbar back pain, nerve damage, cartilage plate damage and so on. 1. Lumbar back pain: laser treatment of lumbar disc herniation is guided by X-ray or CT, puncture needle into the lesion area, through the puncture needle into the optical fiber, the optical fiber releases laser light to vaporize the intervertebral discs, thus reducing the compression of the nerve root or spinal cord. After laser treatment, it may cause aseptic discitis or traumatic reaction of the intervertebral disc, resulting in low back pain, which can be relieved after a few days. 2. Nerve injury: the nerve root may be damaged during the process of puncture and laser release, resulting in the loss of the corresponding nerve reflexes and the appearance of sensory abnormalities, motor disorders and other manifestations. 3. Cartilage plate injury: improper puncture site may accidentally injure the cartilage plate, resulting in cartilage plate injury, bleeding at the puncture site and other symptoms, requiring prolonged bed rest and anti-inflammatory and anticoagulant treatment. If the above symptoms occur, it is recommended to go to the hospital in time for early and regular treatment.