Abstract: In order to improve passive electromagnetic armor’s defenses against shaped charge jets (SCJ), the necking affection, kinking affection, and transverse electromagnetic force affection are analyzed theoretically and calculated through an electromagnetic-structure co-simulation. Subsequently, the regularities of distribution of the current density, magnetic flux density, and the electromagnetic force in and ultimate deformations of the SCJ are obtained. Finally, experiments regarding the actions of necking, kinking, and transverse electromagnetic force are conducted and a conclusion is obtained:passive electromagnetic armor can damage an SCJ. Through static penetration experiments with armor-piercing projectiles whose diameters are 39.2mm, it is found that their penetrative capability is reduced 8.6% when the charging voltage is 5 kV and peak current is 150 kA.