Pulsed laser ranging technology is widely used in military, civil and other fields for its high ranging accuracy and simple operation. In order to further improve the maximum range of a laser rangefinder, a multi-pulsed laser rangefinder has been developed in recent years. According to the advantages and disadvantage of the testing methods of previous pulsed laser ranging systems, in view of the multiple-pulsed rangefinder ranging principle, a multiple-pulsed laser rangefinder detection method is proposed. The problems of high requirements for testing places, complex processes and atmospheric visibility for previous testing are effectively solved.