The invention relates to a method for purifying coke oven gas used for power generation with gas turbines, and mainly overcomes a technical problem that cooling pipelines of compressors are liable tobe blocked and emission of sulfur dioxide in tail gas of gas turbines is excessive because sulfides, tar, benzene and naphthalene are not sufficiently removed in coke oven gas purification in the prior art. The problem is solved well by adopting a technical scheme, wherein the method includes a) feeding coke oven gas from a coke oven into a crude debenzolization unit, and performing crude debenzolization to form a stream I; b) feeding the stream I into a crude desulfurization unit, and performing crude desulfurization to form a stream II; c) feeding the stream II into an integrated purification column containing a molecular sieve adsorbent, and removing aromatic hydrocarbons and sulfides in the gas at the same time to form a stream III; and e) feeding the stream III into a compressor, compressing the stream III, and then feeding the compressed stream III to a gas turbine to generate power, with a stream IV being formed by tail gas after the stream III is combusted in the gas turbine and the stream IV being released. The method can be applied in industrial power generation with coke oven gas.