Abstract: Faced with more and more complicated environment of electromagnetism, higher requirements were proposed by users about jamming perception. This paper used a method of parameter extraction of six kinds of active jamming(included three kinds of suppression?jamming and three kinds of deception jamming) based on entropy theory, analyzed the differences between different active jamming according to simulation results and drew a conclusion that entropy theory can be used in jamming perception. Among the three kinds of entropy theory, ShEn and ExEn can divided noise amplitude modulation(AM) jamming, NoEn can divided suppression jamming and velocity deception jamming, but all entropy theory methods don’t fit in the division about range deception jamming and angel deception jamming. In addition, the paper also analyzed the calculation complexity of three kinds of feature extraction ways by compared with the simulation time of the three methods , and conclude that the calculation complexity of norm entropy is the least. Finally, confirm the recognition rate of three kinds of entropy theory methods through naive Bayesian classifier.