The invention discloses a protective device defect eliminating coordination instrument without circuit power outage, and belongs to the technical field of circuit protective devices. The protective device defect eliminating coordination instrument without the circuit power outage at least comprises a protective device replacing unit, a detection unit, a control unit and a state indicating unit, wherein the protective device replacing unit is used for replacing an abnormal protective device appears in a circuit, the detection unit is used for detecting the replacement protective device unit or the repaired abnormal protection device to ensure normal working, reliable action and correct indicating, and transmitting the current checking states to the state indicating unit, the control unit is used for sending out detection control instructions, and controlling the working state of the detection unit, and the state indicating unit is used for displaying current working operation states. The protective device defect eliminating coordination instrument without circuit power outage solves the problems that previously, an operation switch and the circuit have to be powered off so that the failure of the protective device can be handled, power supply reliability is influenced, and potential hazards of accidents are laid for the safety operation of equipment. The protective device defect eliminating coordination instrument without circuit power outage has the advantages of being simple in structure, convenient to use, high in efficiency and capable of improving power sale quantity and circuit reliability.