Insulator leakage current online monitoring device

An insulator leakage current online monitoring device comprises a charged body, an insulation pillar and an insulator pillar support portion. A tail of the insulator is connected to one lead which is connected to a grounding electrode. The lead is connected to a Hall-type current sensor. The Hall-type current sensor is connected to the monitoring device. One outer end of the monitoring device is designed with an apparatus antenna. A conditioning circuit and a terminal row are designed in the monitoring device. The terminal row of the monitoring device comprises a current signal positive terminal, a current signal grounding terminal, a power supply negative terminal and a power supply positive terminal. The conditioning circuit comprises a core processing unit and a short message module. The Hall sensor in the insulator leakage current online monitoring device possesses the following advantages that the structures are firm, linearity is good, an operating temperature is wide, environment resistance is high and so on. By using the device of the invention, cost can be reduced; high accuracy is achieved; usage is convenient so that popularization and application are obtained.