The invention discloses a nano ZSM-5 
molecular sieve based catalyst and preparation and use methods. The 
molecular sieve catalyst consists of molecular sieves and 
metal components, wherein the molecular sieves are nano ZSM-5 molecular sieves with a short b-axis, a medium 
high silica-
alumina ratio, less strong acid, high Lewis 
acid content, and resistance to hydrothermal deactivation. The preparation method is as follows: mixing a 
silicon source, an aluminum source, a template agent, a structure 
promoter, an additive and alkali with water, and stirring to prepare a precursor solution, then crystallizing, separating 
solid from liquid, and calcinating to obtain 
molecular sieve raw 
powder; mixing the molecular 
sieve raw 
powder with an 
ammonium salt solution, stirring, filtering, mixing with the 
ammonium salt solution for several times, stirring, filtering, and calcinating to obtain 
hydrogen-type ZSM-5 molecular sieves; mixing with the 
metal precursor solution, 
drying and calcinating to obtain the 
aromatization catalyst. The use method is as follows: transforming oxy-compound raw materials to 
aromatic hydrocarbon through the catalyst under the 
reaction conditions. The nano ZSM-5 molecular 
sieve based catalyst has the characteristics of being high in aromatics yield (reaching up to 99%) and long in service life (the catalyst is alive after 300 hours, and the aromatics selectivity reaches up to 70% after the catalyst is subjected to hydrothermal aging at 760 DEG C for 4 hours).