Abstract: The amounts and functional group of soil mircroorganism in Suaeda salsa, Spartina alterniflora, Phragmites communis wetland and rice field were discussed. The results appears that the amount of soil bacteria、soil cellulose decomposition fungus and azotobacter in rice soil were more than those in the others. The sequence of amount of these microbe from much to less were Spartina, Suaeda salsa and Phragmites communis. The amount order of soil cellulose decomposition fungus were in reverse to the order of bacterial. The amount of fungus among these plants were no otherness. The amount of soil microbe in summertime was more than that in winter, and the amounts of fungus and azotobacter were broadly apparent.