The invention discloses a dried bamboo shoot fermented sauce, and a preparation method thereof, and belongs to the technical field of food processing. The dried bamboo shoot fermented sauce comprises,by weight, 80 to 100 parts of flour, 50 to 60 parts of fresh bamboo shoot, 20 to 26 parts of peanut, 0.8 to 1 part of yeast, 0.36 to 0.45 part of Aspergillus oryzae, 15 to 20 parts of red date, 10 to12 parts of honey, and an appropriate amount of water. The preparation method comprises following steps: raw material preparation, raw material pre-treatment, dried bamboo shoot processing, starter making, fermentation, blending, and packaging and sterilizing. According to the preparation method, dried bamboo shoot is taken as the raw material, most oxalic acid in bamboo shot is removed, red dateand peanut are added, suitable people range is widened, and edible value is high.