The invention discloses ethanol-extracted extractum of cooked puerh tea and a preparation method and an application thereof. The product is produced through ethanol extraction of cooked puerh tea and clarification, filtering, distillation and concentration of liquid extract. The ethanol-extracted extractum of cooked puerh tea is diluted to be in the concentration of 1-10 percent through 95 percent of ethyl alcohol, and then added into tobacco shreds according to 0.01-0.1 percent of the weight of the tobacco shreds to provide the tobacco with special fragrance. Simultaneously, free amino acid in cooked puerh tea can well react with Maillard during the alcoholization and burning process of the tobacco to generate fragrant substances, and can also neutralize the alkaline matters in the tobacco, so as to reduce excitation, enrich the tobacco fragrance, reduce excitation and impurity smell, and improve the taste and residual taste. The oolong extractum, the preparation method and the application have the advantages that the technology is simple, the operation is simple, the prior manufacturing technique is not required to be changed, the product can not cause solvent contamination, andhas good application prospect.