In this paper, we present a method for accurately measuring the diopter of both progressive multi-focus and large-range single focal lens. Based on Talbot interferometer methods, we investigated the principle of lens diopter measurement and deduced the formula of optimal diopter measurement. The main parameters of the Talbot interferometer were designed for the range of -8 D to 8 D, and include the grating period, grating angle, and grating spacing. Furthermore, a phase-shifting Talbot interferometer measuring system was constructed and we adopted the calibration method, which uses the target coordinate and grating coordinate systems. Here we applied a five-step phase-shifting algorithm to solve the moiré fringe. The multiple experimental results of multiple diopters and progressive multi-focus lens show that the measurement error is better than 0.1%.