Abstract: Lateral and directional aero-coupling effects of tailless lifting body are always strong. Weissman chart criteria were applied to analyze the lateral and directional stability of this vehicle. In order to construct a group of aerodynamic data, a serial of configurations were developed based on a general shape. Then a 6-DOF flight dynamics simulation technology was applied to research each configuration's lateral and directional stability at 1-g wings level trimmed flight condition, with and without aileron control. According to simulation results and Weissman regime-identification method, the Weissman charts for all configurations were obtained. As a conclusion, the lateral and directional stabilities of the vehicle are almost located in regime B of Weissman chart. This method could be used to design lateral and directional aero-coupling stability of maneuverable reentry vehicles.