Abstract: Objective To systematically evaluate the effect of tea drinking on typeⅡdiabetes prevention inthe population,provide a reference for developing typeⅡdiabetes prevention inthe population. Methods A comprehensive search was performed for cohort studies about the effect of teadrinking on typeⅡdiabetes prevention inthe population from the databases of Chinese National Knowledge Infrastructure（CNKI）,Wanfang database,VIP,PubMed,and Cochrane Library,and the retrieval time was from January 2000 to March 10,2023. The primary exposure index was teadrinking and the primary outcome index was typeⅡdiabetes. Review Manager 5.3 software was used to conduct the meta-analysis of the study results. Results Totally 13 cohort studies were identified,comprising 1 097 442 participants and 53 566 typeⅡdiabetescases,with follow-up duration of 5-24 years. After pooled adjustment,compared with people who do not drink tea,those who drink tea had a 12% lower risk of typeⅡdiabetes（HR=0.88, 95%CI=0.78-0.99）,of which drinking green tea reduced the risk of diabetes by 9%（HR=0.91,95%CI=0.84-0.99）,and those who drink tea ≥4 cups/day had a 17% lower overall risk of the disease compared to those who do not drink tea（HR=0.83,95%CI=0.71-0.98）. Conclusion The teadrinkingis beneficial for reducing the risk of typeⅡdiabetes in the population,and it is recommended that residentsconsume at least four cups of green tea per day on the basis of a healthy diet to achieve the best preventive effect.

Key words: Tea, typeⅡdiabetes, Cohort study, Meta analysis