The invention relates to a method for preparation of aromatic hydrocarbons and combined production of ethylbenzene from alcohol ether. The main object of the invention is to overcome the problem that the output of xylene is low while combined production of ethylbenzene is realized. The method comprises the following steps: 1) converting a reaction raw material into an alcohol ether aromatization product in an alcohol ether aromatization reactor; 2) separating the alcohol ether aromatization product in a separating unit so as to obtain a gas phase I, an oil phase I and a water phase; 3) delivering the gas phase I to an absorbing tower so as to obtain absorption tail gas and absorption liquid, and conveying the absorption tail gas to an ethylbenzene apparatus; 4) conveying the absorption liquid to a desorption tower for separation into light hydrocarbons and residues, dividing the residues into two sub-material-flows, returning a sub-material-flow I as an absorbent to the absorbing tower and conveying a sub-material-flow II to an aromatic hydrocarbon conversion unit; 5) delivering the light hydrocarbons to a light-hydrocarbon aromatization reactor for conversion into a light-hydrocarbon aromatization product; 6) separating the light-hydrocarbon aromatization product via a gas-liquid separator so as to obtain a gas phase II and an oil phase II and returning the gas phase II to the absorbing tower; 7) conveying the oil phase I and the oil phase II to the aromatic hydrocarbon conversion unit so as obtain non-aromatic hydrocarbons, benzene, xylene and heavy aromatic hydrocarbons; and 8) combining benzene and purchased benzene and conveying combined benzene to the ethylbenzene apparatus. With such a technical scheme, the method overcomes the above problem and can be used for industrial production of aromatic hydrocarbons from alcohol ether.