Abstract: The poly phenolic compounds of tobacco have been extensively researched abroad in recent years. The polyphenolics plays an important role in various aspects of growth and development of tobacco, curability, colour shade and grade of tobacco leaf, tobacco smoking flavour, etc. For further understanding of the poly phenolic compounds of tobacco. the authors summarize the literatures published at home and abroad, and lay emphasis on the introduction of effects of cultivation and management conditions on physblogical metabolism of polyphenolics during the plant growth and polyphenolic role in tobacco and smoking aroma .The paper also reviews polyphenolic types , property, distribution, physiological function, biological synthesis and genetic variation in tobacco.

Key words: Tobacco, Polyphenolics