Production of Y-shaped molecular sieve is carried out by dissolving aluminum source and sodium hydrate into solution, cooling into room-temperature, adding into silicon source, agitating, obtaining gel reactant, transferring the gel reactant into synthetic kettle, sealing, crystallizing at room temperature-60 Deg C. for 12-72hrs, centrifugal separating the crystallized products, washing, drying and obtaining Y-shaped molecular sieve with grain size 200-500nm.