In order to visually display the wind tunnel spin test results and improve the utilization of data, a software is designed based on OpenSceneGraph 3D rendering engine. With the input of model data, position, attitude angle and rudder deflection angle, the spin test process can be reproduced in three dimensions, and the viewing angle can be adjusted freely, the rendering speed can be controlled, and the spin animation can be derived. The results show that the software has been successfully applied to the aerodynamic center Φ5 m vertical wind tunnel spin test, which effectively improves the test efficiency and data analysis experience.