The localized soreness and numbness of patients with cervical disc herniation after the small needle knife may be related to the edema of local tissues, which generally does not require special treatment and can subside on its own. Small needle knife belongs to the category of minimally invasive treatment of traditional Chinese medicine, is the product of the combination of Chinese and Western medicine, the principle of its treatment is mainly to decompression of local soft tissue high pressure or adhesion, release, this kind of treatment usually has no obvious side effects. Needle knife treatment can damage small nerves and capillaries in the soft tissues, which may cause edema in the tissues surrounding the wound to compress the nerves, producing symptoms such as soreness, pain and numbness. Patients with cervical disc herniation experience localized soreness, swelling and numbness after the needle knife treatment, pay attention to rest and avoid excessive mental tension and stimulation, and the local discomfort symptoms can be relieved or subside on their own. If the symptoms are serious, it is recommended to seek medical treatment in time.