NOVELTY - Processing penicillin fungus dregs comprises (a) mixing penicillin fungus dregs with water to perform constant-temperature hydrolysis reaction, and performing solid-liquid separation to obtain supernatant and precipitate, conveying the supernatant into wastewater treatment system; and (b) inoculating anaerobic activated sludge in anaerobic fermentation tank, mixing precipitate with residual sludge produced by wastewater biological treatment to obtain sludge precipitate mixture, injecting mixture into fermentation tank to stir, and draining biogas residues and feeding during fermentation.    USE - The method is useful for processing penicillin fungus dregs (claimed).    ADVANTAGE - The method: completely eliminates the residues of drugs in the penicillin fungus dregs, so that the problem that anaerobic fermentation of single penicillin fungus dregs cannot be efficiently sustained is solved; and achieves minimization and harmless treatment to the penicillin mushroom dregs; produces the biogas residues by treatment of the penicillin mushroom dregs, which can be used as raw materials of organic fertilizers (claimed); and produces biogas during anaerobic reaction, which can be used as cleaning fuels; is safe; and achieves resource utilization of the penicillin mushroom dregs.    DETAILED DESCRIPTION - Processing penicillin fungus dregs comprises (a) uniformly mixing penicillin fungus dregs with water to perform constant-temperature hydrolysis reaction, and performing solid-liquid separation at a room temperature to obtain supernatant and precipitate, conveying the supernatant into a wastewater treatment system, and keeping precipitate aside; and (b) inoculating anaerobic activated sludge in an anaerobic fermentation tank, mixing the precipitate with residual sludge produced by wastewater biological treatment to obtain sludge precipitate mixture, injecting the mixture into the fermentation tank to stir at a constant temperature, and draining biogas residues and feeding during fermentation.