Sweet potato residue processing technology

The invention discloses a sweet potato residue processing technology. The technology comprises the following steps: S1, taking materials and sterilizing; s2, preliminary decomposition: putting a certain amount of sterilized residues in the step S1 into a decomposition tank, then adding a certain amount of aspergillus niger, and decomposing for 2-4 days at the temperature of 28-30 DEG C to obtain a preliminary decomposition product; s3, secondary decomposition: taking a certain amount of the primary decomposition product in the step S2, then adding a certain amount of saccharomycetes, and performing decomposition at 33 DEG C for 4 days to obtain a secondary decomposition product; s4, third decomposition: taking a certain amount of secondary decomposition product in the step S3, then adding auxiliary material soybean meal, uniformly mixing and stirring, then performing high-temperature sterilization treatment, then adding soybean meal fermentation strain-composite beneficial bacteria into the mixture subjected