▎ 摘　　要

NOVELTY - Extracting and concentrating tobacco water extract comprises mixing and heating the raw material of tobacco raw materials and water in a water bath, carrying out first extraction using graphene oxide, placing the whole mixture in a filter film for coating, and extruding the tobacco water extract by extrusion, subjecting the slag and water to secondary thermal extraction, extruding the tobacco water extract using the same extrusion method, and mixing the two tobacco extracts to obtain a tobacco extract with a solid content of tobacco of 3-10%, filtering the tobacco extract twice to obtain a clarified tobacco extract, osmotically concentrating the clarified filtrate, concentrating a tobacco water extract concentrate with a target solid content of tobacco extract of 50-60% using sodium chloride as the extraction agent to obtain diluted extraction liquid. USE - Method for extracting and concentrating tobacco extract. ADVANTAGE - The method enables extracting and concentrating tobacco water extract with improved recycling utilization rate in a cost effective manner.