Children′s functional constipation is a common digestive disease in pediatrics

and its recurrence is one of the difficulties in clinical treatment. It is believed that the occurrence of functional constipation is related to the dysfunction of the five internal organs

but the spleen is particularly important. The spleen is located in the center

and when the spleen yin is insufficiency

the dysfunction of its ascending and descending and moisturizing become the key to the pathogenesis of recurrent functional constipation. We should pay attention to nourishing spleen yin to fundamentally alleviate the dysfunction of the spleen moisturizing the body′s viscera and spleen governing transportation. The treatment should be mainly based on drugs of sweetness

sweetness and sourness

and sweetness and coldness

with the principle of nourishing spleen-yin and tonifying spleen qi.