Finger eating may be caused by bad habits, mental and psychological factors, and lack of nutritional elements. 1. Bad habits: children’s ability to imitate is strong, the surrounding crowd has the habit of eating fingers, the child may deliberately imitate, the formation of bad habits, will frequently eat fingers, parents should be given timely correction. 2. Mental and psychological factors: often quarrel between husband and wife or often reprimand the child, resulting in excessive mental tension, more fear, it is easy to often eat fingers, should improve the family environment, and more to appease the child. 3. Nutrient deficiency: children long time partiality picky eating, the body of certain nutrients lack, such as iron, zinc, etc., will lead to frequent finger eating, parents should correct the child’s eating habits, to ensure balanced nutrition. Children love to eat fingers, may also be related to other reasons, when there is other discomfort, it is recommended to consult a doctor for examination and treatment.