The invention discloses a preparation method and application of aromatization catalyst for gas condensate. The method is to load metal active components onto a nano molecular sieve, which comprises 0.1 to 10.0 weight percent of noble metal platinum, 1.0 to 10.0 weight percent of a second metal M, 89.0 to 98.9 weight percent of a carrier, wherein the carrier is composed of 60 to 90 weight percent of a nano HZSM-5 molecular sieve and titanium dioxide, the balance being aluminum oxide, the noble metal platinum is a fist active component. The catalyst is applicable to production of aromatic hydrocarbon through aromatization of gas condensate. With gas condensate as the raw material, benzene, toluene, xylene (BTX) together with a byproduct of 18 to 28 weight percent of high quality liquid gas are produced in a reactor of moving bed under the conditions of a total reaction pressure of between 0.5 and 2.0 Mpa, a temperature of between 400 and 580 DEG C, a weight space velocity of the raw material of between 0.5 and 4.0 h <-1>. The catalyst has high actively and selectivity anti-carbon capacity, reusability and high yield rate of aromatic hydrocarbon products.