【2-3 month olds eat hands naturally】 2,3 month olds don’t know that their hands are their own, they notice their hands by chance, put their hands in their mouths, and eat sweetly and satisfactorily, which is the child’s exploratory behavior, and doesn’t need to be stopped. Guiding 2, 3 months children to learn to use their hands: small infants often make a fist of the hand, when touching objects sometimes open, you can let him touch the different texture of the object, learn to hold for a while. Hang some toys within the baby’s field of vision where his hands can reach. He can wave his little hands to touch the toys by chance, and learn hand-eye coordination to touch the toys intentionally in this repeated contact. [4-6 months of infants eating hands is the development of perception] 4, 5 months, infants can hand-eye coordination to grasp toys, not only eat hands, will also grasp the toys and any other objects into the mouth, parents do not have to be nervous, do not have to stop, the mouth to explore the baby’s perceptual ability to benefit from the development of the baby. Guide 4-6 months child exercise with hands. 5 months can put the toy at different distances, in the child after efforts can reach the place, let the baby with their own efforts to reach the toy, do not passively put the toy in the hands of the baby. 6 months exercise the child to pass the toy from one hand to the other hand. When sitting, the baby already holds an object in one hand, give another object to the same hand to see if it will pass the original object to the other hand, if not, you can teach the baby to do so, and he/she will learn it after a few times. 【7-12 months old babies eat hands to relieve teething pain】 After 6 months, most children are teething. When teething, babies feel uncomfortable, and children soothe themselves by biting their fingers, fists or other objects. It’s just like when we adults have sore legs, rubbing the muscles can relieve the pain, it’s the same thing. You can give your child dental chews to achieve a gentle massage of the gums. However, many infants still like to bite their fingers and fists, so there is no need to over-correct your child. [Preschool or school-age children still eat hands or gnawing nails to be more caring] Preschool-age children who are still eating their hands, most of them are due to psychological reasons, and the lack of a certain element in the body has little to do with. Parents should communicate more with their children to understand the child’s psychological condition, is not insufficient care, and expand the child’s range of interests, encourage them to gradually quit the bad habits.