The invention relates to a method for improving a cut tobacco storage and fermentation environment. According to the method, cut tobacco is stored in a wooden barrel, is sealed with a cover and then placed in a cool and dry environment, the temperature of the environment is ensured to be 20-30 DEG C, the humidity is 50-70%, and the storage time is 15-30 days; every interval with first set value, wine with set alcohol concentration and set volume is added into the wooden barrel, so that wine aroma, wood aroma and tobacco aroma are mixed to improve the sensory quality of the cut tobacco. According to the technical scheme, the construction of a unique wine-wooden barrel storage environment is facilitated, and the unique wood aroma and the wine aroma continuously released by a slow release inner container interact with the cut tobacco, thereby providing an environment with rich aroma for the cut tobacco storage, promoting the alcoholization of the cut tobacco, enriching the aroma and strengthening the style.