Olea europaea is a woody oil crop with high medicinal and edible value, which of wind pollination is effectively supplemented by insect pollination. To explore the species differences, structural composition and distribution of pollinator of O. europaea during flowering in China, this study investigated and collected pollinators of O. europaea in 13 typical sample plots and the community structure and diversity of pollinators were analyzed by dominance indexes and diversity indexes etc. The community similarity of pollinators was quantified by calculating the similarity of species composition among the sample plots. 564 insects of 3 orders, 13 families, 25 genera and 37 species were collected and identified from 2020 to 2021. The dominance analysis showed the dominant groups of pollinators were either Apidae/Syrphidae or Apidae/Halictidae, and the diversity analysis indicated that the highest diversity index of pollinators was Wanzhou of Chongqing, while the lowest was Haibin middle road of Xichang. Sample plots of Longnan gather together by the results of community similarity analysis. In addition, Mianning of Liangshan, Songya of Mianyang, Fengjie of Chongqing, Hechuan of Chongqing, and Nanning of Xichang, Santai of Mianyang, Wanzhou of Chongqing were clustered into clusters, respectively. Therefore, the pollinators, as Apis cerana cerana, Apis ligustica and Eristalis cerealis, in the dominant groups can be used in pollination service of O. europaea. At the same time, unreasonable human interference and habitat destruction should be avoided to ensure the diversity and pollination effect of pollinators. Based on the investigation of pollinator diversity and community similarity, the natural background of the sample plot in Wanzhou of Chongqing can provide a reference for the transformation of pollinator habitat, and the sample plot in Haibin middle road of Xichang as the key protection object. The dominant pollinators identified, such as A. cerana cerana, A. ligustica and E. cerealis and so on, will effectively deal with the limitation of pollen resources of O. europaea. The effects of human disturbance and habitat destruction on pollinators should be considered in the subsequent transformation of O. europaea plantation, and the specific contribution of pollinators to the fruit setting rate and yield of O. europaea can be further explored based on this study. To sum up, this study preliminarily completed the exploration of community structure characteristics and diversity of pollinators of O. europaea in China, which provided a new perspective for using insect assisted pollination to solve the problem of low fruit setting rate of O. europaea.