Abstract: An online decision-making method for radar jamming schemes based on SDAE-SVM algorithm was proposed for the active radar guided missile jamming scenario. The jamming scheme decision-making principle model was build based on cognitive electronic warfare theory, including the online evaluation module for radar status and the online evaluation module for jamming effectiveness. Distinguish between active suppression jamming and active deception jamming, radar status online evaluation indicators and jamming effect online evaluation indicators were constructed respectively, and adaptive evaluation process for radar status and jamming effectiveness was established, and SDAE-SVM algorithm was construct from integrating SDAE algorithm and SVM algorithm for solving online decision-making models of jamming schemes. Through simulation case analysis, the following conclusions are drawn: the accuracy rate of the online decision-making method for radar jamming schemes proposed in this study reaches 96.02%. Compared to using SDAE algorithm and SVM algorithm alone to solve the problem, the accuracy rate of the decision-making scheme obtained using SDAE-SVM algorithm is the highest, which proves that this research scheme is feasible.