The explosive growth of micro-satellites has brought about increasingly saturated competition for low Earth orbit resources, and more complex potential needs of on orbit operations grow quickly. Aerospace robotic arms are still the most important optimal option to replace human beings to perform complex operation tasks for a long term. Faced with extreme requirements and environmental constraints different with on the ground, the miniaturization of the electronic system is the bottleneck that determines space robots’ performance and energy efficiency ratio. This paper proposes an architecture of reconfigurable integrated processing microsystem for the application of micro space dual arm robotics. The core architecture design is studied from the task demand orientation, with processing, communication, sensing, execution, control and other functions in a highly integrated architecture, through system modeling, simulation and software hardware collaborative design. A corresponding assessment is provided for the subsequent implementation of hardware system miniaturization using the microsystem 3D integration process.