In order to eliminate the effect of the disturbance gravity and improve the hit accuracy of ballistic missile, the equivalent theory based on the characteristics on the movement of ballistic missile and control system theory was established to compensate the effect of the earth disturbance gravity on motion parameters indirectly and meet the hit accuracy requirement. According to the characteristics of different compensation modes and compensation quantity, the compensation modes of embedded mode, fractional step mode and sectional mode, etc. were proposed, which provides a general framework and theoretical basis for compensating the influence of disturbance gravity to the movement of ballistic missile.