Method for synthesizing ZSM-5 zeolite

The invention discloses a method for synthesizing zeolite Socony Mobil (ZSM)-5 zeolite. The method comprises the following steps of: mixing a composite silicon source, an aluminum source and water, adding or not adding inorganic alkali, and crystallizing an obtained reaction mixture at the temperature of between 100 and 200 DEG C for 8 to 16 hours, wherein in the reaction mixture, the molar ratio of Na2O to SiO2 is 0.05-0.2:1, the molar ratio of SiO2 to Al2O3 is 20-100:1 and the molar ratio of H2O to SiO2 is 5-15:1, and the composite silicon source consists of an active silicon source in an amount which is 13 to 99 weight percent based on the SiO2 and an inert silicon source in an amount which is 1 to 87 weight percent based on the SiO2. The method for synthesizing the ZSM-5 zeolite has low water consumption, high yield in a single kettle, short crystallization time and low cost; and the synthesized ZSM-5 zeolite has high crystallinity and uniform particle size.