Abstract: This paper describes two kinds of methods for correcting earth curvature in GPS supported bundle block adjustment.A set of actual aerial photos with GPS camera position data taken from Tianjin's experimental project was used in the test,which was done by using combined bundle block adjustment program system WuCAPS.The experimental results have shown that the accuracy using strict method is much better than that using common method for GPS supported bundle block adjustment.In this paper,some useful suggestions for practical GPS supported aerotriangulation are presented.