Disease analysis: Hello, there are some differences between these two drugs. Shen Si Pills are four kinds of medicines, namely Fructus Psoraleae, Evodia rutaecarpa, Nutmeg and Schisandra chinensis, which have the effects of warming kidney, strengthening spleen, astringing intestine and stopping diarrhea. On the basis of Shen Si Pill, drugs such as Radix Aucklandiae, poppy shell, terminalia chebula, Radix Paeoniae Alba, Rhizoma Zingiberis, Atractylodis Macrocephalae, etc. are added, which further enhances the efficacy of warming middle warmer, dispelling cold, invigorating spleen and stopping diarrhea. Suggestion: Therefore, Shen Si Pill is mainly used for patients with mild symptoms of spleen-kidney yang deficiency, while Roukou Shen Si Pill is used for patients with spleen-kidney yang deficiency and severe wind-cold in the body.