Abstract: Shengjin lake wetland is one of important winter habitats for cranes in China. How the wetland spatiotemporal changes affect the winter cranes population dynamics has important significance for the wetland ecology, and crane population’s restoration. In this study, we analyzed four species cranes (Grus monacha, G. leucogeranus, G. grus and G. vipio) yearly observed amount variations between 1986 and 2015, and fit the curves between the cranes amount variations and year’s changes. Furthermore, the spatiotemporal changes of the wetland landuse were presented through the remote sensing images, the correlations between wetland spatiotemporal changes and crane amount changes were also identified. The results show this region landscape patterns had changed greatly between 1986 and 2015. The areas of grassland, paddy field, beach and some others were increasing, whereas the forest land, dry land, water area and reed marsh areas were declining. The four species cranes observed amounts generally decreased year by year. G. leucogeranus and G. vipio amounts had similar change patterns in the period. The space changes of reed marsh and water areas exhibited significantly positive relations with the crane’s amount variations, whereas the grassland, the beach and paddy field changes presented significantly negative relations with the crane’s amount variations. Other land use might also have indirect effects on the crane changes in this region.