Abstract: A miniature intelligent circuit breaker, including a box body, the box body including an upper cover and a bottom box, and a circuit breaker actuating mechanism for switching on/off the circuit breaker, a wire inlet end, and a wire outlet end being arranged in the box body. An automatic closing function part is arranged inside the box body and includes an automatic closing mechanical unit and an automatic closing control unit. The automatic closing mechanical unit includes a motor and an intermediate transmission mechanism. The operation of the motor is realized through the automatic closing control unit. The circuit breaker actuating mechanism is driven to move through the transmission of the intermediate transmission mechanism, such that the closing action of the circuit breaker is ultimately realized.