Highly crystalline NaZSM-5 zeolite samples were synthesized by the hydrothermal crystallization method in the absence of organic templates using different Si sources, which included silica sol, silica gel, a mixture of silica sol and sodium silicate, a mixture of silica gel and sodium silicate. HZSM-5 catalysts were prepared through ion-exchanging of NaZSM-5 powder samples for three times with a hydrochloric acid solution of 1 mol/L. The structure and acidic sites of the products were characterized by X-ray diffraction (XRD), liquid N2 adsorption, and NH3-TPD techniques. The catalytic performance of the HZSM-5 catalysts was evaluated on the cracking of JP-10. Results show that the ZSM-5 zeolite products prepared using silica sol as Si source have higher crystallinity, more acidic sites and more stable catalytic activity than those prepared using silica gel as Si source. The replacement of a mixture of silica sol and sodium silicate for silica sol as Si sources produces ZSM-5 products with lower crystallinity and lower catalytic performance. Meanwhile, the replacement of a mixture of silica gel and sodium silicate for silica gel as Si sources produces ZSM-5 products with higher crystallinity and higher catalytic performance.