In Chinese medicine, unformed stools are called loose stools (thin, unformed feces). If the stools are loose for a long period of time, it is generally considered to be related to Yang deficiency of the spleen and kidney or dampness of the spleen, which can be seen in both cold and hot cases. Kidney is the main water, spleen is the main transportation (spleen has the function of digesting diet, absorbing food essence and water and transferring it to the whole body), spleen and kidney yang deficiency can lead to the body transporting diet and water and grain essence malfunction, if the water and grain essence can not be fully absorbed by the body, from the stools and go, it will lead to loose stools not shaped. In addition, if the spleen is weak to transport water-dampness, water-dampness can also lead to loose stools and diarrhea, repeated and prolonged, and undigested food in the stools. There may be Cold-Damp, Damp-Heat conditions, which need to be diagnosed in conjunction with other clinical symptoms. It should be noted that occasional loose stools may be related to poor diet and cold abdomen, which can be relieved on their own. However, prolonged loose stools should be considered to be related to spleen and kidney yang deficiency or spleen deficiency and dampness, and it is recommended to consult a doctor in time for treatment under the guidance of a physician.