The double-body missile is a special-structured missile that is formed by two single missile bodies connected together through a shared wing,and thus has unique aerodynamic characteristics.Using the FLUENT software,and spalart-allmaras (S-A) turbulence model,aerodynamic characteristics of single and double-body missiles under different Mach number and angle of attack are analized.The aerodynamic characteristics differences between the two configurations are studied.The calculation results show that: a double-body missile has better lift capacity than a single-body missile,but its resistance is greater,and the lift-to-drag ratio decreases.The resistance of the two types of missile decrease with the increase of attack angle,and their drag reduction amplitudes decrease along with the increase of Mach number.