Abstract: This paper deals with monte carlo technique for analysing numerically position-al and orientational error of industrial robot linkage.By means of the technique,the distribution contours,probability density functions(histogram)and other statisticcharacteristics of positional and orientational error of robot hand can be obtainedthrough sampling source error with any density function and then simulating errormodel.For illustration,a 6 DOF robot linkage is taken as a numerical example. robot linkage, error,probability,Monte-carlo,numerical calculation.