An optical pulse tester includes an optical divider configured to cause a return light to divide into first divided light and second divided light, a first optical receiver configured to receive the first divided light and output a first optical receiver signal, a second optical receiver configured to receive the second divided light and output a second optical receiver signal, and a signal processor configured to obtain a waveform indicating an intensity distribution of the return light in a longitudinal direction of the optical fiber by performing level conversion of the first optical receiver signal and the second optical receiver signal on the basis of a divided ratio of the optical divider and optical receiver sensitivities of the first optical receiver and the second optical receiver and synthesizing the first optical receiver signal and the second optical receiver signal which have been subjected to the level conversion.