The invention discloses a thermal magnetic circuit breaker with a real-time detection function. The thermal magnetic circuit breaker comprises a thermal magnetic circuit breaker body and a power measurement module clamped with the thermal magnetic circuit breaker body, wherein an input end of the power measurement module is electrically connected with the input end of the thermal magnetic circuit breaker body; an output end of the power measurement module is electrically connected with the output end of the thermal magnetic circuit breaker body; a CPU is arranged in the power measurement module; at least one communication transmission port for data communication transmission with the outside is arranged in the power measurement module; the CPU is electrically connected with the communication transmission port; and the communication transmission port is electrically connected with an upper computer for carrying out real-time display on communication data of the communication transmission port. When the thermal magnetic circuit breaker is used, overload and short-circuit protection can be carried out on a circuit, remote detection of current, voltage, a busbar temperature, a power factor and circuit breaker opening and closing states of a circuit system can be achieved through the upper computer, and an operator can more intuitively and conveniently learn the operation state of the circuit.