Abstract: Investigation and statistical analysis on the tree species composition, diversity index of Tingtao Scenic of East Lake by using typical sampling method. The results showed that 45 plant species were identified in Tingtao Scenic of East Lake,which belong to 28 families,39 genera,including 10 evergreen arbor species,19 deciduous arbor species,14 evergreen frutex species and 2 deciduous frutex species. The Richness index and the Simpson index were showed that the index value of arbor the index value of frutex,the index value of evergreen trees the index value of deciduous trees,at the same time the evenness index showed a contrary value.