Finger eating in babies may be due to physiological factors such as strong appetite, and generally does not require treatment before the age of 4. Behavioral modification treatment can be conducted under the guidance of a doctor after the age of 4. When babies are zero to one year old, they are in the micturition period, and many babies satisfy their strong micturition by eating their fingers. Generally, no special treatment is needed, and good hand hygiene can be practiced to avoid the occurrence of acute gastroenteritis in babies. When the baby is 4 years old or older, if there is still a habit of eating hands or the baby before the age of 4 years old severe gnawing fingers, resulting in repeated bleeding or ulcers, can be under the guidance of a doctor to behavioral correction therapy, for example, if the baby did not eat the fingers on the appropriate reward, eat the fingers on the appropriate punishment, but also in the finger smear some bitter melon juice and other disgusting taste of the baby. In addition should avoid the baby psychological tension. Avoid tension. After the age of 4 years old, the baby still has finger eating it is recommended to actively bring the child to the child health department of the hospital to seek medical treatment, to find the cause, and actively intervene.