With the development of small satellite technology, the requirements for satellite payload weight and volume increase stringently, and the functional mission is getting more and more complex. A small satellite image processing system for high function density and performance based on system reconfiguration technology is proposed. An image processing system reconfigurable platform with small size, light weight, fast response speed, low power consumption and high reliability is designed to realize fast switching among different images at different mission stages. And system stable operation is ensured through redundant design to meet the requirements of space operation environment.