When three-month-old babies experience pain from hand eating, parents are advised to use teething sticks or pacifiers for their babies. Three-month-old babies eating hands is a relatively common phenomenon, because three-month-old babies enter into the oral sex period, through the action of eating hands to explore the world, stabilize their emotions, and produce a pleasant feeling, but eating more hands may also lead to bacteria on the hands into the body or lead to pain. It is recommended that parents can give their babies appropriate use of teething sticks or pacifiers, which can meet the needs of the baby’s appetite period and also increase the baby’s sense of security, and pay attention to washing the baby’s hands diligently to avoid increasing the chances of infection. If you find that your baby’s frequent hand-eating seriously affects your health and oral development, it is recommended that you take your baby to a child health care center in a regular hospital, and intervene according to your doctor’s instructions.