Abstract: The spleen system mainly includes the spleen and its associated fu organs, orifices as well as meridians and collaterals. Through collecting clinical cases of the spleen system and according to the physiological function and pathological characteristics of the spleen system, the authors referred to the ancient Chinese medical classics and experts' opinions, systematically elaborated the location, nature and symptoms of the disease, and summarized the common basic and compound patterns of the spleen system in clinical practice, thus providing references for the diagnosis of the disease and syndrome of the spleen system.