Heavy bags under the eyes of small children may be caused by physiological factors such as heredity as well as pathologic factors such as allergic rhinitis. 1. Physiological factors. Observe whether the parents of small children have similar bags under the eyes, if caused by heredity, then no special treatment is needed. Irregular work and rest, lack of sleep, can also cause heavy bags under the eyes of children. 2. Pathologic factors (1) allergic rhinitis patients will appear nose itching, nasal congestion, runny nose and other symptoms. When the child is resting and sleeping, he or she is affected by nasal congestion and lack of sleep, which leads to the phenomenon of heavy bags under the eyes. (2) Adenoid hypertrophy occurs after repeated respiratory infections, and the child develops the symptoms of teeth grinding, snoring and heavy bags under the eyes. (3) Suffering from heart disease such as heart failure, causing vascular reflux obstruction, resulting in heavy bags under the eyes. Children with heavy bags under the eyes, need to actively seek medical attention, clear cause for targeted treatment.