During the infancy, the spleen is often deficient while the stomach is small and weak. Improper diet and prolonged food preference, preference to between-meal nibbles, irregular ingestion, excessive intake of fat, sweet and tonic foods impair the splenogastric functions in transportation and transformation, giving rise to anorexia; suffering from many diseases and chronic diseases, or improper care after recovery impairs the receiving, transformating and transportating functions of the spleen and stomach, causing anorexia; the failure to nurse and protect the congenitally weak zang organs, especially the spleen and stomach, may also result in anorexia; besides, abnormal emotional activities cause the liver qi to invade the spleen, or excessive thinking impairs the spleen, all giving rise to anorexia.