The effects of slab reheating temperature (SRT) and finish rolling temperature (FRT) on the anisotropy of mechanical properties of high strength linepipe steels were studied. The texture and microstructure were investigated by X-ray diffractometer and optical microscope. The yield strength anisotropy was measured along 30degrees and 90degrees to the rolling direction. It was fount that the major components of textures were {332}<113> and {113}<110> orientations. The textures were qualitatively similar in all the samples, although the maximum intensities were different. The yield strength anisotropy reduced as the intensity of {113}<110> is weaker by employing the higher SRT and/or FRT. In order to consider simultaneously the effect of morphological and crystallographic texture on yield strength anisotropy, prediction of the plastic property was carried out using a full-constraints Taylor model and a visco-plastic self-consistent (VPSC) polycrystal model. The predicted anisotropy of yield strength with VPSC model assuming ellipsoidal grain shape were in good agreement with experimental ones.