The invention discloses a mint fermented bean curd silverfish sauce and a preparation method of the mint fermented bean curd silverfish sauce. The mint fermented bean curd silverfish sauce is prepared from the following raw materials in parts by weight: 10-15 parts of silverfish, 80-90 parts of pod pepper, 15-20 parts of red fermented bean curd, 5-10 parts of mint leaf, 3-5 parts of milk, 2-3 parts of cream, 4-6 parts of flour, 0.2-0.3 part of white pepper powder, 0.3-0.4 part of cinnamon powder, 20-30 parts of black bean sauce, 1-2 parts of fructose, 0.5-1 part of hot chili oil, 3-5 parts of soybean sauce, 1-3 parts of cooking rice wine, 2-3 parts of vegetarian oyster sauce, 3-4 parts of minced onion, 4-6 parts of mashed garlic, 2-3 parts of minced ginger, 4-5 parts of hawthorn seed powder, 3-5 parts of hydrolyzed plant protein powder, 2-3 parts of white sugar, 1-2 parts of salt, 2-3 parts of negundo chastetree leaf powder, 0.1-0.15 part of disodium nucleotide, 0.1-0.2 part of sodium benzoate, 0.1-0.15 part of acesulfame, a proper amount of plant oil and a proper amount of water. The mint fermented bean curd silverfish sauce is heavy and lasting in flavor, rich in nutrition, delicious in taste and strong in seasoning, is scientific, healthy, tasty and safely edible, and is suitable for various crowds.