The utility model relates to a live working detects instrument with insulation resistance in scene, including detection electrode, insulator spindle and afterbody handle, detection electrode is two, and it sets up side by side, and the front end at the insulator spindle is all installed to these two detection electrode's rear end, and two detection electrode's width and anode -cathode separation are 2cm, the inside of insulator spindle is coaxial makes a shaft hole, makes a wire hole that is linked together with the shaft hole on the anterior lateral wall of insulator spindle, a centre bore is made to the rear end coaxial coupling afterbody handle of insulator spindle in this afterbody handle, this centre bore is coaxial and intercommunication with the shaft hole of insulator spindle. The utility model relates to a reasonable in design, easy operation, low in manufacturing cost, fail safe nature be high, be fit for the novel live working detects instrument with insulation resistance in scene that popularizes and applies, and human safety when using this instrument to ensure electrified detection multiplexer utensil insulation resistance has improved operation site security nature and has detected the standardization.