Based on the meteorological data observed by 65 basic weather stations and statistical data of tea yield,the photosynthesis potential productivity (YQ),photo-thermal potential productivity (YT),and climatic potential productivity (YW) of tea in Zhejiang Province in the past 43 years were evaluated with successive correction analysis. The main factors influencing YW were explored by analyzing the spatial and temporal variation of potential productivity. The climate resource utilization (P) was also assessed by combining the YW with actual productivity (Ya). The results showed that,in the past 40 years,the YQ of tea in Zhejiang Province was 15.17 t·hm~(-2), with high value in north region and low value in the south region. The YT of tea was 11.27 t·hm~(-2),increasing gradually from Jinhua to the surrounding areas. The YW of tea was 8.39 t·hm~(-2),decreasing gradually from south to north. In the past 40 years,YQ,YT and YW all presented a decreased trend,with a climatic trend rate of-0.15,-0.45 and-0.40 t·hm~(-2)·10 a~(-1),respectively. The variation speeds of YT and YW were more significant than that of YQ as the variation trend of heat and water resources was more obvious than that of solar radiation in the context of climate change. The P of tea in Zhejiang Province was 1.73%-35.12% (with an average of 11.90%) from 2009 to 2013. High P (>20%) was mainly distributed in the east of Hangzhou, Shaoxing,Ningbo,south of Huzhou,and middle of Jinhua.