Abstract: In order to study the species, temporal dynamics and diversity of pests and their natural enemies during the full-blossom periods of roses in different planting years in Erhai basin, traps and random capture methods were used from May to August 2019 to collect a total of 510 specimens, including 404 pests（belonging to 5 orders, 15 families, 25 species） and 106 natural enemies
（belonging to 6 orders, 8 families, 12 species）. Diversity index were used to analyze their community diversity characteristics. The
results showed that the species and the dominant population of main pests for roses and their natural enemies are of no great difference in different planting years, with most of them being yearly species. The peaks of pest species and number all appeared in the middle of full-blossom periods, but the natural enemy communities were different in different planting years. DPS software were used to calculate the correlations between main pests and natural enemies, and results showed that their correlations are different in different planting years, and Kaloula verrucosa could be used as a natural enemy to effectively control the pests.

Key words: Erhai basin, rose, full-blossom period, pests-natural enemies