Abstract: Investigations were carried out on waterbirds communities change at coastal wetland of the southern Hangzhou Bay, Zhejiang province inthe winter of 2011 and 2015. The results showed that the number of water birds increased in 2015 and the dominant species was shorebirds.Comparisons on number of birds between the two investigations demonstrated that geese and duck increased significantly (P<0.05, Z=－ 1.999),shorebird had no significant variation, but Fulica atra decreased Evidently. There were no obvious difference of biodiversity, evenness and richnessindex between the two years. The investigation showed that a part of natural intertidal zone was reclaimed, and became the second habitat of somewaterbirds. However, wetland was still the main habitat for waterbirds. Recommendations were offered such as reduce reclamation area and managewater level for maintain waterbirds population.