While passing through an ultra-short-pulse measurement system, the pulse will be broadened owing to the presence of transmission elements. The broadening of the pulse results in significant errors in the final measurement results. To address this problem, a total-reflective ultra-short-pulse measurement system is designed to realize the measurement of shorter ultra-short pulse. In this system, Fresnel bi-mirror is used to generate time delays and a cylindrical mirror, thin crystals, and gratings are used to generate spectra, preventing the generation of dispersion in the system. Under the premise of satisfying the sampling rate requirement, the sampling range of the frequency-resolved optical gating trace is analyzed to obtain the required time delay and frequency-doubling bandwidth. With this constraint, the relationship between the width of the pulse to be measured and parameters of Fresnel bi-mirror and cylindrical mirror is deduced herein.