The invention discloses a casing flavor for an expanded cut tobacco. The casing flavor comprises the following components in parts by weight: 8-15 parts of a Zimbabwe tobacco leaf extract, 5-12 parts of a Brazil tobacco leaf extract, 3-8 parts of honey, 1-3 parts of 10% by mass of a red jujube extract, 2-5 parts of 1% by mass of phenylacetaldehyde, 5-8 parts of 1% by mass of guaiac wood oil, 0.5-2 parts of a fenugreek fluid extract, 1-3 parts of a liquorice fluid extract, 2-5 parts of maple syrup, 1-2 parts of 10% by mass of an orris root extract, 10-25 parts of water and 12-61.5 parts of propanediol. After the casing flavor is added into the expanded cut tobacco, the sensory quality shortages of insufficient fragrance, high metal impurity gas content, high irritation, metallic flavor residues and the like in the existing expanded cut tobacco are overcome, the fragrance content is increased, the expanded cut tobacco is endowed with fragrance and sweetness of a fruit and is enriched in fragrance, the throat irritation is reduced, and the sensory quality of the expanded cut tobacco is remarkably improved.