The difference between Rizhong Pill and Fengshi Rizhong Pill is explained from the following points: First, the composition is different: Rizhong Pill is composed of ginseng, ginger, atractylodes and licorice; Fengshi Rizhong Pill is based on Rizhong Pill with the addition of a warming yang of Fengshi. The main reason is that the function of the spleen and stomach decreases, and its ability to transport water and dampness and dietary materials decreases, which is a power deficiency. The normal function of the spleen and stomach is the manifestation of “qi”, which is driven by the transformation of yang qi. The clinical manifestations are different. Li Zhong Wan is a formula for treating symptoms such as loss of appetite, abdominal distension, diarrhea or constipation, lack of color, indigestion, shortness of breath and weakness, while the symptoms of Radix Rizhong Wan are not only the manifestations of Li Zhong Wan, but also the manifestations of deficiency cold, such as cold limbs and fear of cold, depression, diarrhea and loose stools, etc.