The suitability evaluation of land development is the basis and premise for the preparation of territorial spatial planning. This study is to explore an evaluation method and application for resources-environment carrying capacity and land development suitability toward to sustainable urban ecosystem management. Based on the "bottom line" thinking of ecological protection red line and permanent basic farmland, this study proposed a logical framework and index system for evaluation of resources and environment carrying capacity and land development suitability with background constraint-integrated restriction-capacity evaluation-multi-space suitable evaluation. Taking Yantai as an example, this study set up different scenarios of urban ecosystem protection, and comprehensively used Delphi method and multi-element space overlay method to carry out the study of evaluation of resources and environmental carrying capacity and land development suitability. The results showed that: (1) The restriction of resource and environment to Yantai's economic and social development was weak, and the areas with high-restriction only accounted for 6.09% of land area. (2) The resources and environmental carrying capacity varied greatly among different districts and counties in Yantai, showing a gradually increasing trend from the northwest to the southeast. (3) Under the scenario of sustainable urban ecosystem management, there were significant differences in the land development suitability for urban land use. The suitable construction area was only 2380 km². Under the scenarios of traditional management of urban ecosystem, the suitable construction area of Yantai was 2610 km². The quantity structure of unsuitable construction area and suitable construction area was 1.12:1. Yantai had great potential in the development and utilization of land space. In both scenarios, the suitable construction area in Yantai City was larger than the current construction area, which provided land security for the future development and ensured the water resources security and ecological security. The results can provide decision-making information support and technical services for the optimization of land space in Yantai, as well as major decision-making and strategic deployment of government departments in relevant regions.