With the development of ammunition intelligence， the unpowered glide munitions represented by JDAM are widely used in modern warfare. Accurately predicting the future trajectory of such targets is the key problem of modern air defense fire control solution. In this paper， a method of future point prediction for unpowered glide targets based on attitude solution is proposed. Kalman filter is used to estimate the position， velocity and acceleration of the target present point. The target attitude coordinate system is established according to the state information of the target， and the state transition matrix is updated based on the force analysis under the attitude coordinate system. The state transition matrix is used to predict the future position of the target point. The experimental results show that compared with the traditional method， the accuracy of the proposed method is improved by 29%-63%.