Abstract: In this study,investigations and analysis were made of natural enemies and pests in nonpolluted tea gardens,general tea gardens and organic tea gardens in Mingshan,in order to contrast their ecological environments between 3 kinds of tea gardens.The results showed that there were found pests of 8 orders,45 families,and 75 species,and natural enemies of 11 orders,36 families,and 71 species.The main pests were mites,scale insects,leafhoppers,aleyrodids,Scirtotuthrips dorsalis,and Toxoptera aurantii etc.The main natural enemies were spiders,ladybugs,hoverflies and parasitoid wasps.The analysis of the dynamic curves of main pests and natural enemies showed that the organic tea garden was most consistent with the natural law evolution,the general tea garden was next,and the general tea garden was the worst.