To enable a polarity test of an electric circuit to be carried out by using a simple lighting tester of this invention due to the fact that an electric circuit capable of inspecting a polarity test of an electric circuit related to a lighting apparatus and a plug socket is not actually applied.

This preferred embodiment is shown in Fig.1 as one example relating to a simple lighting tester used in the case of performing an indoor testing. Reference numeral 1 denotes the simple lighting tester and this simple lighting tester 1 is constituted such that an operating rod 5 for use in fixing or removing operation is attached to a plug member 4 acting as a free fixing or removing connector member against an electrical lead-in relay fitting 3 installed at an indoor ceiling 2 and a lighting lamp 6 is fixed to it. When a switch 10 of the simple lighting tester 1 of this invention is turned on, the lighting lamp 6 is lit and in synchronous with this lit state, in the case that its earth side is connected to a neutral line, a small lamp near a location 12 of a base end part 9 of the operating rod 5 is lit and a buzzer rings to enable its polarity to be determined correct.