The invention relates to a production method of a trichoderma spp. biocontrol agent, and belongs to technical fields of microbial fertilizers and the resource utilization of waste water. According to the method, grape peel dregs and grain stillages produced during grape wine production are used as raw materials for the production, and a method of solid state fermentation is adopted to produce the trichoderma spp. biocontrol agent. The production process comprises: (1) taking waste water of kitchen garbage as a medium to inoculate trichoderma spp. and preparing liquid seeds by liquid culture; (2) inoculating the liquid seeds to prepare a large number of liquid trichoderma spp. products with waste water of kitchen garbage as raw materials for the fermentation; (3) adding the cultured liquid seeds or the liquid trichoderma spp. products into biomass materials, and performing solid state fermentation to prepare solid trichoderma spp. products; (4) drying the fermented products, adding stabilizing agents and auxiliary agents, pulverizing, and packaging. The process for producing trichoderma spp. microbial fertilizers has low production cost and is environment-friendly; the products can significantly improve the quality of soil environment, increase crop yields, and control various plant diseases caused by fungi. A processing method for effectively processing plenty of high concentration waste water produced during the production of kitchen garbage is simultaneously realized and environmental pollution is reduced.