A and Y type zeolitic crystal films were synthesized on porous supports from the reaction mixture of 1.9 $SiO_2-1.5;Na_2O-Al_2O_3-40;H_2O$ and 10 $SiO_2-7;Na_2O-Al_2O_3-280;H_2O$ composition, respectively. The zeolite film was characterized by XRD and SEM. The crystals grown on the porous matrix were very closely bound together and the thickness of membrane was about 8-15$mu extrm{m}$. The densely intergrown crystals could be also synthesized by the hydrothermal treatment at $100^{circ}C$ after pressing the reaction mixture without addition of water. A zeolite membrane crystallized as a thin film showed the selective permeability of water from water and methanol mixture through the molecular sieving activity of micropores.