At present,the analysis about maximum measuring range of Fourier transform profiometry(FTP) given by Takeda is fit for fringe pattern with single direction frequency carrier.When fringe pattern with two directions frequency carrier is projected onto the object,the limitation of measuring range have not been given.So the maximum measuring range of FTP projected this kind of fringe pattern was analyzed and an expression was given.It shows that we can avoid the frequency aliasing by changing the direction of the frequency carrier when the spectra distribution of the measured object is not spherical symmetry,instead of increasing the density of the projected fringe and resolution of CCD camera.