The present invention relates to a process for preparing a paste using a water-soluble dietary fiber, and thus a paste prepared by.The method for preparing doenjang using the water-soluble dietary fiber according to the present invention comprises preparing Meju and immersing Meju in a saline solution of a certain salinity (S110) Soluble dietary fiber blend and Meju aging step of aging the Meju is a mixture of soluble dietary fiber in the salt water immersion (S120) A garlic and chongkukjang mixed processing step (S130) in which garlic and chungkukjang to be mixed with the aged meju are crushed and pulverized, and garlic powder and chongkukjang powder are mixed The aged Meju garlic, garlic and processing a mixture of soybean mixed powder, soybean and Meju mixing processing step (S140) And a fermentation step (S 150) of fermenting garlic, chungkukjang, and meju, which ages the aged meju powder, garlic powder and chrysanthemum powder mixture for a predetermined period of time. In the water soluble fiber mixing and meju fermentation step (S120) Is prepared by mixing a water-soluble dietary fiber material and a thickening polysaccharide, wherein the water-soluble dietary fiber material is at least one of indigestible maltodextrin or polydextrose, and contains at least 50 mass% of dietary fiber, And the viscosity of the 5 mass% aqueous solution at 20 C is less than 20 mPas. The thickening polysaccharide is a polysaccharide having a viscosity of 20 mass% or more in viscosity of 5 mass% aqueous solution at 20 C., salt, alginic acid propyleneglycol ester, carrageenan, guar gum, used is any one or more of the starch or starch derivative The control paste is prepared.According to the above-mentioned constitution, the present invention provides a water-soluble dietary fiber which exerts a physiological effect such as inhibition of blood glucose level rise, a formal action, and improvement of lipid metabolism or excretes a carcinogenic substance to the outside of the body to
