The invention relates to a wine brewing technology, and in particular relates to a whole-process fermenting ginger wine and a preparation method thereof. The preparation method comprises the following steps of: a) cleaning; b) crushing; c) juicing; d) preparing a fermenting solution; e) fermenting; f) inactivating; g) emulsifying and remaining the fragrance; and h) finishing. Compared with the prior art, the whole preparation is performed by a biological fermentation technology, the whole-process fermenting ginger wine tastes soft, is mellow in ginger fragrance, clear and transparent, has no free ginger oil, and has the effects of dispelling wind chill, preventing phlegm from forming and stopping coughing, detoxifying and sterilizing, promoting blood circulation, improving gastric function, improving digestion, preventing cancer, and the like.