Aiming at the characteristics of three-way decision making method and the temporal problem of air combat target intention recognition,a three-way decision making model based on sequential intention recognition is proposed. By establishing the mathematical model of the combination of multi-class and three-way decision making and target intention recognition, while combining the sequential thought, the process of intention recognition is divided into several stages according to the time sequence. In each stage, the target intention recognition result of the current stage is obtained by using the multi-class and three-way decision making target intention recognition model. For the target with no intention identified, based on the updated target information, the recognition is carried out by delay decision, which improves the accuracy of intention recognition and reduces the risk loss of false identification. Finally, the effectiveness of the proposed algorithm is verified by simulation experiments.