In order to meet the needs of high speed,high-precision and large-r ange laser ranging,the analyses of the problems are discussed on both single frequency and multi-frequency laser ranging methods ba sed on phase-shift measurement.Based on characteristics of the needs of ranging speed,precision and ranging range,the laser ranging method with phase-shift measurement is proposed based on the techniques of frequency reduction and high preci sion time measurement.Moreover,the method of parameters selection on ranging system is established based on the ranging need s in sequential order of the ranging frequency, time-measurement precision and reference signal frequency,and also the experim ental ranging system is set up to verify the ranging method under the conditions of many fileds with high speed,high-preci sion and large-range laser ranging.The experiment is performed and the experimental results show that the system has a ranging range of 500m,a ranging precision of 1.08mm and a ranging speed of 0.03-0.04s under the conditions of a 300kHz ranging signal of modulation,a 260kHz reference signal and a time-measurement precision of 50ps.The experiment verifies the effectiveness of the ranging method and system,which can lay the foundations for the high speed,high-precision and large-range ranging.