The invention relates to a method of preparing
wine by a watermelon. The method is characterized by comprising the following steps: taking a mature watermelon; taking out red balloons in the watermelon; separating juice from the balloons by way of physical
dehydration; filtering kernels in the juice; filtering fibrous matters in the juice; adding edible
ethanol with the content of
ethanol of 95% into the juice without kernels and fibrous matters within 8 hours without the balloons, wherein the weigh ratio of the juice and 95% edible
ethanol is 1:(1.2-1.5); and then, in a
closed space and at 24-40 DE C, continuously introducing clean air or
oxygen into the juice / edible ethanol mixed liquid in 8-15 days to obtain the watermelon
wine. Compared with the prior art, the method provided by the invention has the advantages of enhancing the value of the watermelon and fully using the value of the watermelon when the watermelon is rich in production.