NOVELTY - Processing excess sludge by larvae and a method of preparing larvae protein and organic fertilizer, involves the following steps: (1) preprocessing the excess sludge; (2) processing excess sludge by larvae; (3) removing noble metal from larvae body; (4) preparing larvae protein; and (5) preparing organic fertilizer.    USE - For processing excess sludge by larvae and a method of preparing larvae protein and organic fertilizer (claimed)    ADVANTAGE - The method has the following beneficial effects: (1) the excess sludge is processed by bioanalysis without secondary pollution; (2) the noble metal in the excess sludge is effectively removed, and the application safety of organic fertilizer prepared by excess sludge in agricultural production is improved; and (3) the larvae protein is produced when processing sludge along with excellent environmental benefits and economical benefits.    DETAILED DESCRIPTION - Processing excess sludge by larvae and a method of preparing larvae protein and organic fertilizer, involves the following steps: (1) preprocessing the excess sludge: taking the excess sludge by mechanical dehydration from town life sewage treatment plant, adding calcium carbonate powder (0.5-2 mass%) to the excess sludge, where the particle size of the calcium carbonate powder is less than 0.1 mm, after uniformly mixing, adding to the fermentation vat, sealing with plastic film, opening the plastic film after 2-7 days, and finishing the preprocessing of the excess sludge; (2) processing excess sludge by larvae: inoculating fly blow and cultivating in the preprocessed excess sludge with 0.3-0.55% ratio of fly blow and excess sludge, controlling the temperature at 20-35 degrees C in the cultivation process, after 4-6 days, taking away the larvae, finishing the first processing period, then finishing the second processing period according to the method of the first processing period, thus processing 3-4 periods, and partly obtaining larvae and processed excess sludge; (3) removing noble metal from larvae body: cleaning the larvae from excess sludge with water, drying, preparing to dry maggot, putting the dry maggot in the acetum (1-10 mass%), soaking 1-2 hours at 45-65 degrees C, and removing the noble metal from the larvae body; (4) preparing larvae protein: after soaking the dry maggot with acetum, dispersing by liquid and drying, preparing with dry maggot powder, and obtaining larvae protein; (5) preparing organic fertilizer: drying or natural drying the excess sludge processed by larvae, and obtaining organic fertilizer.