In this study we analyzed pollen morphology of the 13 species of Impatiens(Balsaminaceae).We discussed the influence of different palynology characteristics to classification result of Impatiens by comparing the analysis results of palynology and SRAP.We obtained the following results:(1)Pollen grains of 13 Impatiens species were medium-sized.Pollen shapes varied from peroblate to oblate.Polar view varied from rectangular over elliptic to quadrangular,dumbbell and triangular shape.Within the species investigated,tricolpate pollen was observed in some species (I.pritzelii,I.spathulata,I.omeiana).The rest of species have pollen grains with four apertures.In general,sexine ornamentation in 11 species was reticulate.I.dicentra and I.tortisepala had a microreticulate sexine ornamentation.(2)By palynology cluster,13 species of Impatiens are divided into three groups.By SRAP cluster,13 species of Impatiens are divided into five groups.The similarity among palynology cluster results is 30.77%.(3)Palynology characteristics were not always congruent with molecular traits used to distinguish among Impatiens.The palynology cluster results by using pollen size,shape and sexine ornamentation as indexes have the most similarity with that of molecular level(69.23%).Palynology characteristics have a great effect on the accuracy of classification.For systematization of Impatiens,pollen grain size,shape and sexine ornamentation were meaningful index.The characteristics of aperture are difficult to be used as the basis of classification.Pollen morphological characteristics have limitations on the classification.The research suggests that palynology taxonomy of Impatiens asks for selecting valuable classification index.And we must integrate palynology with molecule and morphology when we classify Impatiens.