Aiming at the influence of the tail structure on the external flow field of the rocket with large aspect ratio, the three-dimensional simplified models of 3 kinds of aerofoil rockets were established. On the premise that the 3 kinds of tail can be folded to the diameter of the projectile, the three kinds of airfoil rockets are numerically simulated, and the aerodynamic characteristics of the rockets with different tail structures are analyzed and compared, and the feasibility of the numerical calculation method used in this paper is verified. The results show that increasing the number of wrap-around wings can increase the drag coefficient and the pitching moment coefficient of the projectile, and improve the stability of the projectile. The lift coefficient of wrap-around wings with the same number of wings is higher than that of flat wings, which can produce more lift during flight.The absolute value of lateral moment coefficient of flat wings is lower than that of wrap- around wings.