First, when selecting a greenhouse shed, it is necessary to change locations each year to prevent heavy smashing, and in particular to avoid the pollution of industrial and mining companies that discharge exhaust gas. Second, it is necessary to use adequately decomposed organic fertilizer at a rate of 3,000 kilograms per mu. The third is that chemical fertilizers should be applied sparingly, industriously, ditched, or planted on the ground, and should not be spread on the ground. Fourth, when vegetables are mildly victimized, they must be ventilated and vented in time to reduce the concentration of soil fertilizer solution. Fifth, whenever there is damage to the vegetables, they are sprayed with Huimanfeng Active Liquid Fertilizer at a concentration of 800 to 1000 times and sprayed once every 5 to 7 days.