Abstract: Total station could build square sample plot.At first reference point and the traverse are set to survey the location(X,Y,Z)of trees by total station and lens.Then with the Chinese fir artificial stand in Huangfengqiao Forest Farm,Hunan,as the research subject,S₀ is set as the chief site in the plot,then S₁,S₂,S₃ are set as the first class site,at last,all the survey data are taken to generate plot map.The result shows that the survey data and the real data are the same.So the branch line control measure method is an efficient way in the forest survey.

Key words: total station, tree's location, reference point, control survey