Primula maximowicizii is a typical heterostyly species in genus Primula, which mainly distributed in northern China. To elucidate the diversity of pollen morphology, micromorphological characteristics of pollens in seven natural P. maximowicizii populations were investigated using SEM method. The polar view of most pollens were triangular, and the type of germinal aperture was trisyncolpate. Pollens of short-styled flowers were signi?cantly larger than those of long-styled flowers. Ornamentation of the pollens of short-styled flowers were reticulate with lumina of up to 0.4μm wide, and the pollens of long-styled flowers were microreticulate or verrucate with lumina of up to 0.23μm wide. The pollens’ characters were significantly different among populations with coefficient variation (CV) from 4.88% to 35.48%., and the average CV of short-styled flowers was 16.18%, the average CV of long-styled flowers was 14.89%. Acccording to the morphological characteristics of pollens, the seven P. maximowicizii populations were classified into two groups by UPGMA cluster analysis. The results provided theoretical data for genetic diversity research on P. maximowicizii.