The invention discloses a method for analyzing dynamic characteristics of load switches built in intelligent ammeters. The method comprises the steps of S01, obtaining coil fluxes Phi2 and electromagnetic suction moments Mx of a load switch built in an intelligent ammeter under conditions of different angular displacements alpha of an armature and different coil current values i, so as to obtain static data of an electromagnetic system; S02, obtaining a reed deformation displacement Deltax, counter force Ff and counter moment Mf under the condition of different angular displacements alpha of the armature, so as to obtain counter force static data of a whisker system; S03, carrying out analysis by adoption of a four-order Runge-Kutta method on the basis of the static data of the electromagnetic system and the counter force static data of the whisker system, so as to obtain dynamic characteristic data under a dynamic characteristic parameter condition; and S04, analyzing the dynamic characteristic data obtained in the step S03 to assess the reliability of the load switch. The invention correspondingly discloses a system corresponding to the method and a medium. The method, system andmedium provided by the invention have the advantage of being accurate and reliable in analysis.