The invention discloses lower-sugar paste stuffing which is prepared by raw materials, i.e. cooked lotus seed dry powder or cooked mung bean dry powder, total sugar, vegetable oil and soybean isolated protein. The invention overcomes the defects of the prior art, provides the lower-sugar paste stuffing retaining the nutrient components and the body fragrance of the raw materials and greatly reducing the processing cost and a preparation method for preparing the paste stuffing by using the raw material dry powder, which prevents long high-temperature steaming and stir frying and reduces the generation of toxic and harmful substances.