Small needle knife is a conservative treatment for lumbar disc herniation, which can well loosen the tension generated by the lumbar muscle pain after the lumbar disc herniation, and on this basis, further reduce the pressure of the disc on the nerve root and alleviate the corresponding clinical symptoms. The cost of a single operation of the small needle knife is about 300-500 dollars, which may vary from place to place. But according to the whole course of treatment, may be different, some patients itself is particularly serious symptoms, need to do 2-3 times, the cost should be more, most of the cases do 1-2 times, basically able to have obvious improvement. If there is no significant improvement, it means that this treatment is not particularly effective or the lesion itself is more serious, and further surgical treatment should be considered in order to solve the problem.