Two-year-old babies eat fingers, may be physiological reasons, bad habits or nutritional deficiencies and other reasons. 1. Physiological reasons: as two-year-old babies may lack a sense of security, through physiological finger sucking can be comforted, this is a normal physiological phenomenon, do not need to carry out special treatment. 2. Bad habits: when two-year-old babies have the bad behavior of eating fingers, if they do not intervene in time, they may form the bad habit of eating fingers. 3. Nutritional deficiencies: babies who are often picky eaters may cause the body to lack a variety of minerals and vitamins and other nutrients, which may then appear heterophagy, causing the symptoms of finger eating. Two-year-old baby eating finger unrelieved, should go to the hospital in time to check, and choose the appropriate treatment.