The invention discloses a billing trip-out system and method. A shunt release is connected to the control end of a low-voltage circuit breaker, and when opening operation is performed, the shunt release controls the low-voltage circuit breaker to trip; the fixation end at one side of the low-voltage circuit breaker is connected with a power source, and the load end at the other side is connected with the first end of an intermediate relay; the second end of the intermediate relay is connected with the first end of a high-voltage load control terminal, and the third end is connected with one end of the shunt release; the second end of the high-voltage load control terminal is connected with the zero line end of an electric quantity metering device; and the other end of the electric quantitymetering device is connected with the other end of the shunt release. According to the disclosed billing trip-out system and method, a low-voltage side tripping circuit is formed by setting the intermediate relay, the shunt release and the low-voltage circuit breaker at the low-voltage side, and the shunt release can control the low-voltage circuit breaker to carry out trip-out power cutting according to electric potential provided by the high-voltage load control terminal, thereby achieving a purpose of controlling user power supply.