Abstract: Xinyang city of Henan Province was taken as an example.Firstly, remote sensing image was used to extract ecological sponge in Xinyang city, and then contrast and correct with ArcGIS to identify the ecological sponge of Xinyang. Secondly, the ecological suitability evaluation method was used to select the evaluation factors for weight assignment, and evaluate the ecological sponge of Xinyang. Finaly, according to the results of the evaluation, each evaluation factor was overlaid analyzed to get the Xinyang grayscale sponge analysis, and planned partition according to the actual situation of Xinyang finally. It was put forward adjust measures to local conditions of the sponge urban construction measures according to the characteristics of different partitions,and it provides reference for the construction of sponge city in Xinyang and other small and medium-sized cities.