There are physiological reasons such as small baby’s finger buckle, there are also a variety of diseases caused by nerve damage caused. 1. Physiological reasons: small baby finger buckle is mainly due to the imperfect development of the nervous system function, as well as the local expansion function, caused by immature development, generally do not need treatment, with the baby’s growth and development will be most of the self recovery. 2. Disease causes: for example, trauma caused by the finger nerve function damage, as well as cerebrovascular disease, cerebral palsy or cervical spine disease compression to the innervation of the fingers of the nerves caused by dysfunction, can also lead to the finger buckle. There may be other reasons for the finger buckle, if it is non-physiological finger buckle, it is recommended that the patient go to the hospital as soon as possible for examination, to clarify the cause of the disease, and follow the doctor’s instructions for standardized treatment.