The invention relates to a method for preparing gasoline from methanol. The method comprises the following steps: feeding the methanol into a section of methanol conversion fixed bed reactor filled with a synthetic gasoline catalyst after preheating; feeding a section of mixed hydrocarbon product of the conversion product into an oil-water separator to separate after condensing, so as to obtain crude gasoline, water and a dry gas, wherein one part of dry gas is returned to the methanol conversion reactor to control temperature rise, one part of dry gas is discharged out of the reaction system to maintain the system pressure; obtaining a C5<+> gasoline component and a liquefied gas from the crude gasoline after separating by a debutanizer; obtaining 94# gasoline and C9<+> heavy aromatics from the C5<+> gasoline component after separating by a gasoline separation tower; feeding the liquefied gas into two sections of aromatization reactors to react after mixing with a certain amount of methanol; and refluxing two sections of hydrocarbon products of the reaction product and mixing with one section of mixed hydrocarbon product. By adopting the method disclosed by the invention, the methanol conversion reaction is compounded with the liquidized gas aromatization, so that the service cycle of the synthetic oil catalyst and the gasoline yield are improved, and a heat source does not need to be externally added.