Babies eating fingers are commonly found in the following two situations: 1, iron and zinc deficiency, babies usually have picky eating, paranoid eating, loss of appetite and other performance, there is gnawing fingers or eating scraps of paper, wall skin and other omnivorous behavior, you can go to the hospital for trace element testing, according to the test results to give the corresponding nutritional supplements. 2, abnormal psychological behavior, baby introverted, can not use too many words to express personal needs, living environment Lack of love and care, lack of security inside, through chewing fingers to self-soothing and express the inner anxiety. Parents should not blame too much, but use neglect therapy, while giving the baby more love and companionship.