NOVELTY - Sterilizable strain activating agent comprises 0.01-0.03 kg of copper sulfate, 0.2-0.8 kg of zinc sulfate, 0.2-0.5 kg of ferrous sulfate, 0.1-0.35 kg of manganese sulfate, 3-4 kg of magnesium sulfate, 2.5-3.5 kg of dipotassium phosphate, 4-6.5 kg of calcium superphosphate, 18-20 kg of urea and 66-72 kg of glucose, where the agent is prepared by grinding copper sulfate, zinc sulfate, ferrous sulfate, manganese sulfate, magnesium sulfate, dipotassium phosphate, calcium superphosphate, urea and glucose to obtain particles of 40-80 meshes, and packaging and sealing the particles.    USE - The sterilizable strain activating agent is useful for edible mushrooms.    ADVANTAGE - The sterilizable strain activating agent is cost-effective, eco-friendly, and simple and convenient to use, has high-pressure resistance and high-temperature resistance, reduces culturing time, and advances the fruiting period.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of using the sterilizable strain activating agent, comprising: mixing and stirring the sterilizable strain activating agent with edible mushroom compost, spraying the mixed and stirred sterilizable strain activating agent at a later fruiting stage of edible mushrooms, where: the step of mixing and stirring the sterilizable strain activating agent is carried out by adding water into the sterilizable strain activating agent for preparing a suspension with a concentration of 0.15-0.3 wt.%, adding the suspension into the edible mushroom compost, stirring the mixture at the later stage, and bagging and sterilizing the stirred mixture under high pressure or normal pressure; and the step of spraying the strain activating agent is carried out by diluting the sterilizable strain activating agent using water to obtain 0.05-0.1 wt.% of diluted solution, and directly spraying the diluted solution on a fruiting bag for 1-3 times in a day, where spray amount of the strain activating agent on each fruiting bag is 100-150 ml.