EU-1 molecular sieve is a kind of mesoporous high silica molecular sieve with EUO topology. It has a one-dimensional microporous channel structure, space group Cmma. It contains a 10-membered ring through-channel and a 12-member Side Pocket structure (Side Pocket) that is vertically connected to it. It is a kind of molecular sieve which is very characteristic in the pore structure. It is mainly used in the xylene isomerization industry. We can produce EU-1 molecular sieves with different silica-alumina ratio.