In the past 40 years of reform and opening-up, territory consolidation has changed with the political will and institutional changes in the fields of resources and ecological environment, and has undergone a process of rise, collapse and integration. On the basis of the important policies in the field of territory consolidation in the past 40 years of reform and opening-up, this paper summarizes the development experience, the main problems and the new trend of territory consolidation in the new era, and then puts forward a new conception of territory consolidation. The goal of territory consolidation of the new era will be firmly integrated with the ecological civilization strategy to optimize territorry space, resources and ecology and to create a people-oriented and high-quality territorry space. Territory consolidation in the new era will depend on carrying capacity and suitability evaluation mechanism, combining comprehensive research and attribution analysis to divide "territory consolidation" functional zones and carry out major projects. Territory consolidation will deal with "negative externalities" in the process of territory space development and utilization to restore land functions by various measures, so as to optimize territory space,improve resource utilization efficiency, protect important ecosystem, restore damaged ecosystem, prevent disaster and control pollution. It will enhance carrying capacity, suitability, beauty, security and the sustainability of territory space.