The invention provides a preparation method for green tea. The method comprises the following steps: fresh leaf treating, performing fixation, primarily rolling, primarily drying, secondarily rolling, shaping, drying and fragrance promoting. In the fixation step, the fixation is performed by a continuous type roller fixation machine and a microwave fixation machine in sequence, and when the continuous type roller fixation machine is used for the fixation, the temperature is 180-230 DEG C, and the time lasts for 2-4min; when leaves are relatively soft, slightly glossy and slightly green, the fixation is performed by the microwave fixation machine, the temperature is 130-190 DEG C, and the time lasts for 2-7min; when the leaves after the fixation are soft and dark green and have no gloss, the green water steam scatters and disappears, the faint scent smell is emitted, and the leaves are discharged and then are aired in a spreading manner in an air blowing manner. According to the method, a fixation technology is refined, and compared with a conventional green tea, the green tea prepared by adopting the method is obviously improved on the aspect of quality of shape, fragrance, liquor color, taste and soaked tea dregs.