Abstract:Adding raisin to liquid fermentation system to optimize various substrates and fermentation conditionsby using orthogonal experiment.According to the best fermentation formula and conditions for fermentation，the fresh weight of hypha was 35.76 g/100 mL and the polysaccharide content and protein content were reached 4.82，7.15 mg/mL.According to the optimized preparation process that preparation hericium fermented mash and instead of water to product potato bread，Process single-factor experiment and orthogonal experiment analysis，The results showed that the optimal of formula was as follows：potato granules 30 g，low-gluten flour 70 g，liquid fermentation of Pleurotus citrinipileatus 90 mL，sugar 80 g，egg 140 g.The obtained cake has a unique flavor，high nutrition and good taste.