PURPOSE: A cold heat treatment method and a device for the extraction of grape juice are provided. Grape juice is prepared without loss of its own color, fresh taste and flavor, using a pot for boiling chinese medicine by the cold heat treatment method under 70-95C of temperature and for 20-60 minutes. The yield rate is 70 % or higher. CONSTITUTION: A device for the extraction of grape juice consisting of: a heat treatment container(16) charging the washed grape; an outer container(19) heating the heat treatment container(16) with water; an electroheater(20) attached to the outer container(19) that heats the water in the container at 70-95C; a stirring wheel(17); a support(21) of the heat treatment container; agitator(18) that helps the grapes be mixed well; a rotating axis(14); a reduction gear(12); an electromotor(11) placed on the reduction gear(12) that makes it rotate; a fixed board(13) of the reduction gear(12); and lid(15) of the heat treatment container(16).
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