Soil microbial plate counting method was used to study the soil microbial flora in two vegetable producing areasin Shouguang City and CangshanCounty(now LanlingCounty).The following results wereobtained:(1)The vegetable planting years has a significant effect on the fauna change of soil microbes in greenhouse. The highest soil bacteria numberoccurs after 4 years and 8 years’planting atCangshan，but 2 years and 6 years forShouguang，and the lowest soil bacteria number in both vegetable producing areas occurs after 12 years and 7 years’planting. The highest soil fungi number occursafter 8 years and 10 years’planting atCangshan，but 3 years and 2 years forShouguang，and the lowest soil fungi number in both vegetable producing areas occurs after 12 years and 7 years’planting. The highest soil actinomycetes number occursafter 2 years and 10 years’planting atCangshan，but 10 years and 5 years forShouguang，and the lowest soil actinomycetes number occurs after 6 years’planting. When the vegetable greenhouses were continuously planted for 12years，the number ofbacteria，fungi and actinomycetes in the vegetable greenhouse soils of the two places decreaseddrastically.(2)Vegetablerotation is conducive to maintaining the microorganism at a highlevel.In the cultivation of single vegetabletypes，tomatoeand garlic have adverse effects on soilbacteria，pepper and garlic can inhibit and reduce the number of soilfungi，and garlichas a strong inhibitory effect for actinomycetes.(3)The total amount of soil microorganisms in greenhouse vegetables inShouguang City was the highest in cucumber-shelfrotation，and the total amount of soil microorganisms in eggplant was theleast. The total amount of soil microbes in Cangshan County was the highest in eggplant-chilirotation.The single varieties ofeggplant and pepper could maintain high soil microbial levels.Vegetable rotation，eggplant and pepper were beneficial to increase the number of soil microbial flora.