The invention provides a method for preparing a Y/EU-1/ZSM-23/ZSM-5/ASA composite material containing regular mesopores. The method comprises the following steps: firstly, preparing a molecular sieve guiding agent, preparing an EU-1/ZSM-23/ZSM-5 precursor based on preparation of ZSM-23/ZSM-5 molecular sieve slurry by a solid-like phase method; synthesizing a Y/EU-1/ZSM-23/ZSM-5 composite molecular sieve by adopting a hydrothermal crystallization method; and adding surfactant and alkaline aluminum-source solution into the slurry containing the molecular sieve; and washing, drying and roasting the product to obtain the composite material. In the Y/EU-1/ZSM-23/ZSM-5/ASA composite material, the differential thermal failure temperature of the Y molecular sieve can be higher than 950 DEG C, the grain size is kept to be lower than 400nm. The composite material has the porous distribution characteristics of micropore-mesopore, mesopores in the surface ASA are regular mesopores, and the mesoporous size can be adjusted by changing the synthesizing process condition.