The invention relates to a low energy consumption unipolar electronic switching circuit and an indicator light micro energy consumption brightening circuit. The low energy consumption unipolar electronic switching circuit comprises a micro power consumption AC-DC switching power converter E, an electronic switching circuit F and an indicator light micro power consumption brightening circuit 10, wherein the micro power consumption AC-DC switching power converter E consists of a first rectifying circuit 1, a voltage-reducing and current-limiting circuit 2, a switching power oscillation control circuit 3, a high-frequency transformer 4, and a second rectifying circuit 5; the electronic switching circuit F consists of an electronic switch, a power circuit 8, a relay electricity-saving circuit 7 and a relay switching circuit 6 and a third rectifying circuit 9; the indicator light brightening circuit 10 consists of a capacitor and a resistor; the micro power consumption AC-DC switching power converter E is connected in parallel with the AC power input end and the DC power output end of the electronic switching circuit F; the voltage-reducing and current-limiting circuit 2 is connected between the DC output end of the rectifying circuit 1 and power supplying ends of the switching power control circuit 3 and the high-frequency transformer 4; and the brightening circuit 10 is connected between an anode of an LED and an induction voltage signal source.