The utility model relates to a ground net state detects technical field, concretely relates to ground net hidden danger intelligent acquisition device, and the device can be under the circumstances that does not influence ground net normal operating, and the application power frequency realizes as the detected signal that boosting current, measuring current equilibrium mass distribution and distributing type detect, can distribute collection system in the region of awaiting measuring, has shortened the length of test cable greatly, has greatly shortened the wiring time. It includes collection system, signal source and control terminal. Collection system passes through the information acquisition point of the external ground net of collection system collecting wire and gathers the detected signal, and collection system will detect signal transmission to control terminal. The control termination control terminal of signal source, the neutral point of the external ground net of reference edge passing signal source current line in two large current output end of signal source, but add the check point of electricity end through the external ground net of disconnect cable in two large current output ends of signal source.