A set of laser measurement system of far-field spot based on detector array has been developed.The laser detector array of 15rows×15lines is laid on the 1.5m×1.5m target surface with 10cm interval.With the pre-amplifier,the detector response signal will,respectively,generate synchronization pulse,maintain the signal peak,sample peak-signal A/D,and finally be stored by computer systems,afterwards to carry out the spot formation and analysis.The density of spot energy ranges from 10μJ/cm2 to 10mJ/cm2,and the measurement accuracy of unit detector is better than 15%,and the highest frequency of measured spots is up to 500Hz.This system can meet the measurement requirements of current high-power laser weapons and equipment for interference.