The correlation between crystallographic orientation textures (including orientation textures of grain and grain boundary plane) and magnetic properties of (Sm,Pr)2Co7 phase (short as 2:7 phase later) in high-performance commercial (Sm,Pr)Co5 sintered magnet has been investigated. The Rietveld analysis shows that there is about 6.9 wt% of 2:7 phase in the magnet. EBSD results indicate that the grains are strongly textured and the {0001} orientation texture are remarkably preferred. Moreover, the grain boundary planes are also textured. However, the {0001} orientation texture of 2:7 phase is slightly worse than that of (Sm,Pr)Co5 phase (short as 1:5 phase later). Moreover, the distribution of grain boundary plane has been calculated by the grain orientation texture in the magnet. The most preferential plane distribution locates at {0001} position, and the normal line of the phase boundary plane between the 2:7 phase and 1:5 phase is perpendicular to the easy axis of the magnetization of the magnet. There is difference in crystallographic orientation textures of 2:7 phase and 1:5 phase, which specifies that the orientation degree of phases is different. Furthermore, the orientation degree in turn affects the remanence, suggesting the presence of 2:7 phase will slightly reduce it. Meanwhile, magneto-optical Kerr optical microscope observation shows that the domain widths of 2:7 phase and 1:5 phase are almost the same, and there is no obvious difference in the reversal sequence of magnetic domain. The results proved that 2:7 phase has no significant negative effect on the coercivity. Therefore, the magnet has a crystallographic-orientation-dependent magnetic property. Besides, the study suggests that the anisotropy of crystal plane energy may become a new method to characterize the performance of permanent magnets in the future.