Two kinds of low poisonous broad-spectrum agricultural chemicals named thriam and chlrothalonil with different proportion and tested the toxicity to Trichoderma viride and Mycogone perniciosa Magn were compounded in the room.From the different proportion,the best preventing and controlling edible fungus medicament which is effective to Trichoderma viride and Mycogone perniciosa Magn were selected.30% dissoluble powder agricultural chemicals GuFeng is made of thriam whose proportion is 18% and chlrothalonil whose proportion is 12% and has become effective bactericide to Trichoderma viride and Mycogone perniciosa Magn.