Abstract: Aggregates status of soil was one of important physical characteristics of soil , amount of aggregates was important index weighing and estimating soil fertility. Aggregates status of greenhouse soils and uncovered soil was studied by dry-sieved, wet-sieved and water-oscillated. According to evaluation of different diameter scale aggregate content determined by Dry-sieved and mean weight diameter (MWD), the machine stability was worse in greenhouse soils than uncovered soil. The water stability was better in greenhouse soils than uncovered soil according to evaluation of ＞0.25mm water stability aggregate content, MWD of water stability aggregate, destruction rate of aggregate, original stability coefficient and disintegration rate of aggregate. It was related to high organic matter content in greenhouse soils. Increasing organic matter content rose content and water stability of 0.25～10mm aggregate.