Abstract:This research chose Cangwu boxed Liubao tea， Cangwu bamboo packed Liubao tea， Yunnan Pu'er， Guiping green tea and Fujian oolong tea as objects to study the differences of phenolic acids' content and type among Cangwu Liubao tea and other teas. After extraction and purification， the optimal phenolic acids purity was turned to be as follows： the 50 % methanol elution of Cangwu boxed Liubao tea， Guiping green tea and Fujian oolong tea were all highest， and so were the 100 % elution of Cangwu bamboo packed Liubao tea and 10 % elution of Yunnan Pu'er. Their purity was 34.1 %， 60.0 %， 66.3 %， 36.8 % and 17.8 % respectively， which indicated the phenolic acids amount of Cangwu Liubao tea was more than Yunnan Pu'er but less than Guiping green tea and Fujian oolong tea. HPLC was lastly applied in the later analysis. The results showed that Cangwu bamboo packed Liubao tea contained two high content featured phenolic acids， and there was also a high content featured phenolic acid in Yunnan Pu'er. The above results indicated that Cangwu Liubao tea and Yunnan Pu'er which belong to dark tea had less phenolic acids compared to Guiping green tea and Fujian oolong tea， but they had some high content featured phenolic acids.