The invention discloses an electronic current booster. The electronic current booster includes an alternating current power supply (1), a sampling circuit (2), a conditioning circuit (3) and a currenttransforming coil (4); the alternating current power supply (1) is electrically connected with a working power supply, the output end of the alternating current power supply (1) is electrically connected with the input end of the sampling circuit (2), the output end of the sampling circuit (2) is electrically connected with the input end of the conditioning circuit (3), the output end of the conditioning circuit (3) is electrically connected with the input end of the current transforming coil (4), and the output end of the current transforming coil (4) is electrically connected with the primary side of a current transformer.