The invention relates to a method for producing a paste toilet soap, which relates to the production technical field of daily washing sanitary products. The method comprises the following steps: producing soap granules into soap chips, which is capable of destroying the original crystals of soap granules, and reducing the soluble point for subsequently mixing and processing at low temperature, uniformly stirring soap chips liquid alkali, distilled water, hydrogen peroxide, coconut oil and pine nut oil to form a first mixed paste, which is capable of eliminating the microcrystallites of soap chips, reducing the solid component and preventing microcrystallites of the crystallization formed by the rebound of crystals. According to the invention, the paste toilet soap which can be packaged bya flexible pipe or a bag is obtained through several times of mixing.