Abstract: The plants of Viburnum in the family Viburnaceae have extremely high ornamental value in gardens. The morphological characteristics of pollen can reflect the evolutionary processes and kinship relationships of plants to a certain extent, but there are very few studies reported on the pollen morphological characteristics of Viburnum species. With the continuous breeding of new varieties in the genus Viburnum, in order to clarify the pollen morphological characteristics of common species with high ornamental value, the pollen morphological characteristics of 35 common Viburnum species in gardens were observed by scanning electron microscopy, and their interspecific relationships were analyzed based on pollen morphology. The results show that: (1) The pollen size of the 35 Viburnum species was small (10-25 μm) or medium (25-50 μm), and the morphology was nearly spherical or elongated spherical. Among them, the pollen size index (SI) of Viburnum keteleeri was the largest at 29.39 μm, and the SI value of snowball viburnum was the smallest at 17.59 μm. (2) Thirty-four Viburnum species had three germination furrows, accounting for 97.14% of the total. (3) The pollen exine ornamentation could be mainly divided into three types: reticulate, verrucate, and papillate, among which the reticulate pattern had the most complicated evolution mode and the highest evolution degree. Thirty-one species had reticulate ornamentation, accounting for 88.6%. (4) According to cluster analysis, 35 Viburnum species could divide into four categories. Combined with correlation analysis, it could be known that Viburnum cylindricum has the most distant kinship with the other 34 species.