In view of the actual problems existed in the horizontal measure technology,such as lower accuracy,lower efficiency and heavy workload of data processing.A new horizontal measuring scheme based on the optical measurement system of laser radar is put forward.Initially,the principle of the laser radar measurement system was analyzed.Horizontal measurement of corresponding aircraft was designed on the basis of the principle.And then，the key technologies of digitization horizontal measurement were further studied,including CCD image process and transmission station measurement.After the actual detection,the combined error of each feature point is smaller than the comprehensive error of 0.5mm,which meets the accuracy of measuring scheme.