The present invention provides a tuckahoe mildewed soybean chilli sauce, which is prepared from the following raw material components by weight: 20-40 parts of soybean, 0.1-0.2 part of tuckahoe, 0.1-0.2 part of medlar, 0.4-0.5 part of coix seed, 40-60 parts of green pepper, 8-12 parts of fresh caridina, 4-6 parts of gravy salt, 0.4-0.6 part of fresh ginger, 0.1-0.12 part of garlic, 4-5 parts of sweet flour paste, 0.3-0.6 part of stachyose, 0.4-0.6 part of yellow wine, 0.01-0.02 part of tea polyphenol, and 0.04-0.06 part of a health Chinese herb additive. According to the mildewed soybean chilli sauce, based on the preservation of the traditional process, the tuckahoe, the green pepper, the dried shrimp and other auxiliary materials are added, and the health Chinese herb additive is added, such that the singleness disadvantage of the traditional variety is changed, the nutrition is rich, and the health effects of spleen strengthening and stomach strengthenin are increased; the tuckahoe mildewed soybean chilli sauce does not contain any preservatives, such that the eating is safe; and the tuckahoe mildewed soybean chilli sauce has characteristics of yellow and bright color, delicious taste, crisp and tender texture, fragrance, rich nutrition, delicious and mellow taste, moderate salty taste, unique, spicy and delicious flavor, and long shelf life.