Soil water-stable macro-aggregates (>0.25mm) are an important characteristic index of soil ero-sion and soil quality. The effects of freezing-thawing on the content of soil water-stable macro-aggregates in Sanjiang Plain wetlands were studied under different soil water contents,numbers of freezing2thaw cycles,and compaction treatments by indoor incubation experiment. Results showed that the content of soil water-stable macro-aggregate was influenced by the freezing2thawing. The effects of freezing-thawing frequency were more significant compared with compaction and initial soil water content. Before the 4th freezing-thaw cycle,the content of soil water-stable macro-aggregates under different treatments increased with the increas-ing of freezing2thawing frequency. After the 4th freezing-thaw cycle,however,the content at high soil water content did not change obviously and increased slightly.