Ecological infrastructure is a condition and process that can maintain, improve, and increase ecosystem services. It is of great significance for improving the capacity of regional ecosystem services. The existing ecological infrastructure planning methods mainly aim at a single scale, which cannot reflect the interaction of ecosystem services at different scales. Based on ArcGIS, Minimum Cumulative Resistance (MCR) model, and Analytic Hierarchy Process (AHP), a macro-meso-micro multi-scale ecological infrastructure method is proposed to identify ecological core area and ecological corridor in this paper. Taking Xiong'an New Area as an example, this paper puts forward an ecological infrastructure planning scheme. The patch area of the ecological core area of the macro scale is recommended to be more than 10 km² and the width of the ecological corridor is set at 100-200 m to maintain the stability of functions such as climate regulation, carbon fixation and oxygen release, biodiversity protection, wind protection and sand fixation. The patch area of the meso-scale ecological core area is no less than 5 km² and its width is set at 50-100 m, which can improve the ecological system service functions such as water conservation, cultural recreation, environmental purification, and noise reduction. The patch in the micro-scale ecological core area should be larger than 1 km² and the width should be 10-30 m, which can effectively control runoff and water purification. Finally we come to the following conclusions: (1) Different scales of ecological infrastructure planning have different goals and different scales, of which the macroscopic scale is the largest and the microscopic scale is the smallest. (2) A set of multi-scale construction planning methods established in this paper can guide the construction of ecological infrastructure scientifically and effectively and improve the service capacity of regional ecosystem. (3) The construction of multi-scale ecological infrastructure planning needs to develop towards the cross-integration of multi-disciplinary theories and methods. The research results can provide scientific basis and reference for decision-making for promoting the sustainable development of Xiong'an New Area in the future.