Molecular sieve powder crystal, with metallic luster, hardness is 3 ~ 5, the relative density is 2 ~ 2.8, the color of natural zeolite, zeolite is white, insoluble in water, thermal stability and acid resistance increased with the increase of SiO2/Al2O3 composition ratio. Molecular sieve has large surface area, up to 300 ~ 1000m2/g, within the crystal surface height of polarization, as a kind of efficient adsorbent, is also a kind of solid acid, acid concentration and acid strength of surface is very high, can cause the catalytic reaction of carbonium ion type. When the metal ion in the composition is exchanged with other ions in the solution, the pore size can be adjusted, and the adsorption property and the catalytic property are changed, so as to prepare a molecular sieve catalyst with different performances.