The danger of hand cuts is mainly determined by the extent of the injury. Because the structure of the hand from shallow to deep are skin, subcutaneous tissue, deep tissue, is composed of tendons, muscles, nerves, blood vessels, bones. Therefore, the degree of injury is closely related to the depth of the injury, the deeper the depth of the injury, the more serious the injury, if the injury is relatively shallow, the degree of injury may not be so serious. If the injury reaches a certain depth, for example, if the blood vessels of the fingers are broken, the patient may suffer from hemorrhage; if the nerves are broken or damaged, the patient may suffer from abnormal sensation or sensory impairment of the hand; if there is damage to the tendons or muscles, there will be impaired mobility and dysfunction of the hand; if the injury is deep to the bones, or even if the bones have been cut off, the patient will suffer from deformity and impaired mobility of the hand. The most serious type of cutting injury is the severance of fingers or the hand, in which case the patient should go to the hospital in time for consultation and treatment, and the doctor will judge whether it is possible to do the amputation and replantation type of surgery.