The invention discloses a circuit breaker control circuit, and an electric car charger operation control circuit and method. The circuit breaker control circuit comprises a logic NAND device, wherein input end of the logic NAND device is connected with a charging current judgment module and a charger put-into-use time judgment module. The charging current judgment module comprises a first comparator, wherein the first and second input ends of the first comparator are respectively connected with a charging current signal collection circuit and a current threshold value input circuit. A first comparison circuit enables received signals to be compared with each other, and outputs a high-level signal or a low-level signal to the logic NAND device. The charger put-into-use time judgment module comprises a second comparator, wherein the first and second input ends of the second comparator are respectively connected with a charger put-into-use time pulse signal input circuit and a put-into-use time threshold pulse signal input circuit. A second comparison circuit enables the received signals to be compared with each other, and outputs a high-level signal or a low-level signal to the logic NAND device. The logic NAND device outputs a triggering signal so as to control the on/off of a circuit breaker.