Based on Opti-System software, temporal phase zone plate lens are deeply researched. The influence mechanism of focal length dispersion compensation of temporal phase zone plate lens from central wavelength is confirmed. The relationships of central wavelength, dispersion compensation, output light pulse extinction ratio (ER) and pulse width are established. Research results show that there is an approximate linear relationship between focal length dispersion compensation of temporal phase zone plate lens and optical signal central wavelength at 1 310~1 550 nm. Through linear fitting, the linear relationship formula of focal length dispersion compensation and center wavelength is obtained. For input light wave with different wavelength, the optimal focal length dispersion compensation can be determined through the formula to realize the light pulse output with the narrowest pulse width and the best ER. Research results can provide theoretical reference for optimization temporal phase zone plate lens design to broaden the application range of temporal phase zone plate lens.