The invention discloses a brewing method of corniculate spurgentian herb, all-grass of common bulrush and Chinese flowering crabapple health soybean sauce. Red kidney beans, the corniculate spurgentian herb and fragrant solomonseal rhizomes are used as main raw materials, and nutritive values of the red kidney beans, the corniculate spurgentian herb and the fragrant solomonseal rhizomes are sufficiently utilized; Chinese herbal medicinal ingredients including white snail shells, all-grass of common bulrush, drymoglossum bones, common cassiope, raceme globba, Chinese litse, scutellaria baicalensis, white peony roots, dandelions, herb of Yunnan begonia and the like are added; the raw materials are subjected to procedures of immersing, cooking, inoculating, carrying out starter propagation, washing mildew, carrying out primary fermentation, carrying out secondary fermentation, leaching oil, precipitating, filtering, sterilizing and checking and the like to prepare the soybean sauce; the nutritive values of the red kidney beans and the fragrant solomonseal rhizomes are sufficiently utilized; the raw materials and the added Chinese herbal medicinal ingredients are synergistically interacted so that the soybean sauce has nutritive components of the raw materials and also has the health effects of warming the middle warmer and tonifying spleen, and regulating qi and nourishing stomach; the soybean sauce is good for human health and a preparation method is scientific and feasible and has strong operability; and the finished-product soybean sauce has brown color and luster, is savory and mellow and palatable, has abundant nutrients, is fragrant and pleasant, and has a remarkable economic value.