Aiming at the adaptive satellite node based on Q-Learning, a decoy jamming strategy of “electromagnetic trap” is proposed by combining traditional and intelligent jamming methods. By setting up decoy module, hot start module and anti-intelligence module, a closed loop of jamming is formed to achieve the operational effect of “decoy and anti-intelligence”. The simulation results show that compared with other algorithms, the proposed method can effectively jam the adaptive satellite nodes, improve the jamming accuracy and reduce the communication throughput.