Needle knife is a medical device that pierces the human body in the way of needles and completes the function of a scalpel in the body. It is a product of the combination of Chinese and Western medicine, and is a blend of acupuncture needles and scalpel. It is developed on the basis of “nine needles” in ancient China, combined with modern medical surgical scalpel, and is a product of organic combination with soft tissue release surgery. Ling Shu Jing. The “Official Needle” says: “If the disease is a big pus, take the beryllium needle”. Beryllium needle”, one of the nine needles, was one of the acupuncture instruments used in Chinese medicine in ancient times to loosen muscles, cut open and drain pus. The needle tool is made of metal material and resembles a needle and a knife in shape. The shape and length of different models of needle knives are slightly different, generally about 10-15 cm, with a diameter of 0.4-1.0 mm, divided into three parts: hand-held handle, needle body, and needle knife. The characteristics of the operation of acupuncture knife therapy in the treatment area stabbed into the deep lesions, cutting, loosening, peeling and other different techniques to achieve the purpose of pain relief and dispel the disease. The advantage is that the treatment process is easy to operate and is not restricted by any environment or conditions. The treatment incision is small, no suture is needed, the damage to human tissue is also small, and it is not easy to cause infection, no adverse reactions, no obvious pain and fear of the patient, no need to rest after the operation, the treatment time is short, the course of treatment is short, the patient is easy to accept. Acupuncture knife has the function of dredging the meridians and channels, activating blood circulation and relieving pain. In treatment, it not only has the cutting and loosening effect of scalpel, but more importantly, it has the two-way regulation and stimulation effect of acupuncture needle, which stimulates the body’s self-regulation function and plays its role by stimulating the corresponding ayurvedic points. The indications for acupuncture therapy are mainly soft tissue injury lesions, bone and joint lesions and spasticity diseases. For example, cervical spondylosis, lumbar spondylosis, osteoarthrosis, soft tissue injury, traumatic bursitis, tenosynovitis, myofasciitis, neuralgia, post-stroke sequelae, spasticity caused by spinal cord injury, and some internal medicine, orthopedic surgery, anorectal surgery, plastic and cosmetic surgery disorders. Acupuncture therapy has absorbed the strengths of Chinese and Western medicine, and has the four characteristics of “simple, convenient, experimental and inexpensive”, which is a green, non-drug treatment method.