The invention discloses electromagnetic pulsed explosive which comprises the following components in parts by weight: 100-120 parts of explosive, 10-100 parts of an explosion electrified compound, wherein the explosion electrified compound is a strong-acid weak-base salt and/or a strong-base weak-acid salt with sulfate radical. The electromagnetic pulsed explosive is prepared by the following steps: uniformly mixing 100-120 weight parts of explosive and 10-100 weight parts of explosion electrified compound, thereby obtaining the explosive. According to the electromagnetic pulsed explosive provided by the invention, energy released by explosion can be directly converted into electric field energy, a super strong electromagnetic radiation source is further generated in air so as to destroy various surrounding electronic devices, and continued interference is generated to various wireless communication signals and radar signals in a wide range.