Studying ecosystem service tradeoffs and synergistic relationships can not only provide a basis for formulating reasonably regional social-ecological system management schemes but can also provide lessons for promoting sustainable regional development. Taizi River is an important guarantee for maintaining the ecological security and water security of the urban agglomeration in central Liaoning Province. For a long time, the industrial layout, which is dominated by heavy industry, has threatened the ecological security of the area and seriously affected the sustainable development of the social economy. In this paper, the spatio-temporal characteristics of carbon sequestration, soil conservation, and habitat quality in the Taizi River Basin were investigated by using the InVEST model based on multi-source data such as meteorology and land use. Pearson correlation analysis was used to explore the spatio-temporal changes of tradeoffs and synergistic relationships at different point scales and different land classes, at the same time, using the IDRISI to predict three different land use scenarios in 2030. The results showed that:(1) the three ecosystem services had a synergistic relationship at all scales (except the 100m scale), the ecosystem service of carbon storage and habitat quality have a consistently high positive correlation, with correlations greater than 0.9 in 2000 and 2010, indicating a significant positive correlation between the two. The larger the sample scale was, the higher the correlation coefficient was, so the two-by-two correlation between the three ecosystem services was highest at the 10km scale. (2) Among the different land use types, the ecosystem service functions of the three land use types of arable land, forest land, and grassland were relatively similar, with soil conservation as the main ecosystem service function among all three, followed by the ecosystem services of carbon storage. The hot spots of ecosystem services in Taizi River Basin were distributed in the eastern part of the basin, dominated by forest land, while the cold spots were concentrated in the western part of the basin, dominated by arable land and construction land. (3) There are synergistic relationships among the three ecosystem services under three different forecast scenarios in 2030. Under the conservation scenario, the ecosystem of habitat quality is the best(0.68), the water area has the largest expansion in 2030, and the ecosystem service capacity is the highest. The development scenario has the largest increase in construction land, a reduction of 871.4km² in arable land and 224.58km² in watershed area, but the worst habitat quality of 0.617.