Needle knife is a new type of medical device that is an organic combination of acupuncture needle in Chinese medicine and scalpel in Western medicine, made of metal material in the shape of needle and knife like an acupuncture tool, the basic shape is similar to acupuncture but slightly thicker, the front tip of the needle is a flat blade, 0.8 mm wide. It can be pierced into the body like an acupuncture needle to achieve the effect of acupuncture, and can also play the role of a scalpel in the body such as cutting, peeling, and loosening. Acupuncture medicine is a new medical discipline formed on the basis of the “nine needles” of the ancients and the fusion of modern medical theory. It integrates the basic theories of Chinese and Western medicine into one, inheriting and carrying forward the meridian theory of Chinese medicine, but also drawing on the anatomy, biomechanics, bioinformatics and surgical research results of modern medicine, this theory and treatment has been verified by the medical practice and tens of millions of cases in the past 30 years. Some difficult diseases have been changed from incurable to curable, difficult to treat to quick cure, complex treatment to simple treatment, open surgery to closed surgery, injury-type pain-type treatment to nearly non-invasive and pain-free treatment, curing a large number of many types of persistent diseases that are difficult to be cured by conventional methods. Acupuncture therapy is effective for the following types of diseases: lumbar disc herniation, third lumbar transverse synovial syndrome, chronic lumbar muscle strain, cervical spondylosis, frozen shoulder, heel pain, flexor tendon stenosis tendovaginitis, bursitis and other chronic soft tissue injury diseases, various diseases caused by osteophytes, etc.