The invention is applicable to producing green tea condensed juice and provides a preparation method for the green tea condensed juice. The preparation method comprises the steps that: (1) under room temperature, green tea leaves are crushed and mixed into tea slurry with water according to weight ratio of 1:5 to 10; (2) the aroma in the tea slurry is separated and condensed to obtain aroma condensate to be cooled and used; (3) after the aroma is removed, the tea slurry is carried out rough filtration and is separated into tea slag and tea juice; (4) the tea juice obtained is cooled to 5 to 10 DEG C; or the tea slag is cleaned and the mixture solution of the tea juice and the water which cleaned the tea slag is cooled to 5 to 10 DEG C; (5) the tea juice or the mixture solution of the tea juice and the tea slag cleaning water in (4) is filtered and microorganism is removed, the mixture solution is condensed to discharge with 10 to 18 percent of the content of soluble solid substance under the aseptic condition and the green tea condensed juice with 8 to 15 percent of the content of the soluble solid substance is formed by adding the aroma condensate. The green tea condensed juice can effectively maintain the original tea dipping quality of original tea.