The invention belongs to the technical field of chemical catalysis, and particularly relates to a catalyst for converting alcohol ether and C3-8 alkane into aromatic hydrocarbon, and a preparation and application method thereof. According to the method provided by the invention, an isolating layer exists between active components and structure reinforcement components, so that the active components are not influenced by the property of the structure reinforcement components, thereby keeping high activity, long life and high mechanical strength in the reaction and the high-temperature water vapor environment regenerated by the catalyst. By using the catalyst provided by the invention, when the alcohol and ether conversion is realized at 450-500 DEG C, the one-through alkyl yield of the aromatic hydrocarbon can be up to 60-75%; the alcohol ether conversion rate is not less than 99.99%, and the one-through service life of the catalyst is not less than 6 hours; and the C3-8 alkane conversion rate at 500-600 DEG C is up to 40-85%, and the one-through aromatic hydrocarbon selectivity is up to 70-85%.