Xylene isomerization method

Provided is a xylene isomerization method. Reaction materials contain mixed xylenes of unbalanced xylene isomers and further contain ethylbenzene. The reaction materials enter a fixed bed thermal insulation reactor filled with base metal molecule catalysts after being heated to a reaction temperature and make contact with the base metal molecule catalysts in the fixed bed thermal insulation reactor under the condition that pressure is large enough for the reaction materials to pass through the whole system so that part of o-xylene and m-xylene can be converted into p-xylene, and the concentration of p-xylene finally reaches or gets close to thermodynamics balance; meanwhile, ethylbenzene in the reaction materials is converted into benzene and C9 arene through a disproportionated reaction under the effect of the base metal molecule catalysts. By means of non-hydrogen isomerization, the method has the advantages that the cost of the catalysts is low, and the operation cost is remarkably reduced.