The main idea of this research is about calculate the aerodynamic derivate of solar powered aircraft .Moreover , we use aerodynamic derivate to manage the safety and stability of aircraft . While aircraft is stable , we use aerodynamic derivative to circulated eigenmatrix , further created the controller of aircraft in Matlab/Simulink&SISOTool environment . We use the combination of Pixhawk and X Plane 10 to imitate the real flying situation . By this experiment , we verify the controller fits the real flying situation or not .Eventually ,we are able to stabilize the solar powered aircraft to cruising with controller.