In the present work, KCl crystals with single crystal face were induced by using the method of bio-mimetic mineralization and self-assembled monolayers of (3-Mercaptopropyl) trimethoxysilane(MPTS) as the template. The crystals were characterized by optical microscope and X-Ray Diffraction (XRD). The crystals were observed in regular shape with uniform size and they were found by XRD to grow along the (110) plane. From these experiments, we can conclude that the good selection of the（110）crystal face of KCl is due to the match between this crystal face and definite lattice structure of the SAMs film.