The utility model relates to an about transmission line pollution flashover trouble environment monitoring device, including sensor group, adc, on -line monitoring information processing apparatus, server end and remote monitoring platform, sensor group's output and on -line monitoring information processing apparatus's input electric connection, just on -line monitoring information processing apparatus output and power transmission line insulator platform account database output and control module's input signal connection, the control module output with the input signal connection of serverend, the output termination remote monitoring platform of server end. The utility model discloses a gather on the transmission line with the environmental factor that pollution flashover is relevant,reach transmission line's pollution flashover fault rate, the measure of formulating antifouling anti -pollution for the electric wire netting provides the reference, reduces the fault rate of pollution flashover, makes the electric wire netting can move under the environment of the low pollution flashover probability of safety and stability.