This paper is dealing with the teachnique of working up 318 orthophotoquads on the scale of 1:10

000 in area of high mountain and vally. We used the collected aerial photograph on the scale of 1:45

000 and 1:35

000

and the results of 1:50

000 scale topographical map for photogrammetric controlextension. In the course

we also used analytical mapping-orthophoto echnique concerning analyticalplotting by means of the directional points for block aerotrian-gulation. The result showed that mapping quality reach the planned standard and the accuracy of land resource survey mapping.