Abstract: The policy of hillside village construction has facilitated the development and utilization of large areas of gentle slopes. The evaluation of territorial spatial development suitability for slopes is the key basis for rationalizing the layout of land functional spaces and promoting the coordinated development of hillside villages with eco-environmental resources. Due to the regional particularities of gentle slopes in Northern Zhejiang, more stringent requirements are imposed on the selection of evaluation indicators and data availability for the evaluation of territorial spatial development suitability. Based on land functions and geographical conditions, this study discussed the coordination between eco-environmental conditions and hillside village development, and analyzed the advantageous conditions and limiting factors of eco-environmental resources in slope development. A region-specific index system and evaluation method were constructed for the functional zoning of sloping fields. The weight of evaluation indicators was determined using the Short Board Theory, Man-Land Relationship Theory, and Analytic Hierarchy Process (AHP). Based on the results, suggestions were put forward to further improve the construction of basic information and the level of intelligent application. This study provides an optimization method for the small-scale evaluation of territorial spatial development suitability of sloping fields in Northern Zhejiang, and the results can serve as scientific evidence for optimizing the spatial pattern of sloping fields in this region.