Abstract: The traditional method of measuring temporal coherence is realized by means of mechanical scanning. However, this method can not be used for single-shot measurement, and the measurement error is larger for broadband light. In this paper, a new method is proposed for measuring temporal coherence properties through one shot. By tilting one mirror of Michelson interferometer, the delay difference of beam wavefront varying with spatial position can be obtained. The temporal coherence information of light field can be calculated and extracted from a single interferogram. The temporal coherence of different broadband light is measured in the experiment, which is in good agreement with the theoretical results. The method will provide a more convenient measurement to temporal coherence for high-power broadband laser device, and improve the measurement efficiency.