Needle-knife therapy is a small needle knife (its water needle knife is a small needle knife). Needle-knife therapy is a new treatment method developed on the basis of acupuncture and closed therapy, and its therapeutic effect has been gradually deified in recent years. Small-needle scalpel is a surgical instrument, which widely peels and loosens the pain points of patients with low back and leg pain, and then injects local anesthetic drugs and hormone drugs to play an anti-inflammatory and analgesic role. The purpose of small-needle scalpel is to create conditions for expanding the closed range. Therefore, small-needle scalpel treatment is actually an improvement of closed therapy, and its therapeutic effect is equivalent to closure. Because adrenal glucocorticoids are used in the treatment process, they should not be used more. The side effects of hormones can cause osteoporosis, gastrointestinal reaction, acne hirsutism, centripetal obesity, etc., and are prohibited for patients with diabetes and hypertension.