Abstract: Terrestrial photogrammetry differs from traditional aerial photogrammetry and close-rangephotogrammetry,for the former adopts different resolution photography,while the latter is similar totake same resolution photography.In the classical least squares adjustment,the coefficient matrix isconsidered without error.Unfortunately,variables in the coefficient matrix are inevitably error-con-taminated.Considering the random errors may exist both in the observation vector and the coefficientmatrix,the total least squares algorithm is studied in this paper.According the weight matrix of theobservations based on different resolution Stereoscopic images of terrestrial photogrammetry,theweighted total least squares in the relative orientation and Procrustes algorithm with absolute orienta-tion are formulated,then the procedure is described.At the end of the paper,the experiments of rela-tive orientation and absolute orientation are investigated to prove that using the weighted total leastsquares based on terrestrial photogrammetry is practicable,and the reliable and accurate solution canbe obtained.