[Objectives]  To clarify the occurrence of the natural enemies of wheat pests in coastal Jiangsu. [Methods]  The species and quantity of predatory and parasitic natural enemies of wheat pests were investigated in Yancheng in 2018 and ecological principles and methods used to analyze their population dynamics and community characteristics. [Results]  A total of 25 species of natural enemies belonging to 2 classes, 6 orders and 15 families were recorded. Predators were from 4 orders, 12 families and 22 species, and parasites were from 2 orders, 3 families and 3 species. There were 2 families and 5 species of Coccinellida, 2 families and 7 species of Diptera, 2 families and 2 species of Hymenoptera, and 8 families and 9 species of Arachnid. At the wheat rejuvenation and jointing stage, field surveys found a total of 10 species of natural enemy, belonging to 3 orders and 4 families. During the booting and flowering period, a total of 19 species of natural enemy, belonging to 5 orders and 13 families, were found. During the filling and ripening stage, a total of 19 species of natural enemy, from 14 orders and 14 families, were found. The similarity index of natural enemies in different wheat growth stages ranged from 0.318 to 0.810; those during the rejuvenation and jointing stage and the filling and ripening stage were the lowest (0.318). In the rejuvenation and jointing stage, the most dominant group was the Syrphidae (0.624), followed by the Braconidae (0.266). During the flowering stage of the booting stage, the dominance values of the dominant species; the Braconidae, Syrphidae and Coccinellidae, were 0.395, 0.270 and 0.249, respectively. During the mature stage, the dominance values of the dominant families, the Coccinellidae and Braconidae, were 0.361 and 0.244, respectively. The highest Shannon-Wiener index (2.143) was recorded during the filling and ripening stage, and the lowest (1.999) during the rejuvenation and jointing stage. The highest Pielou evenness index (0.868) was recorded during the rejuvenation and jointing stage, and the lowest (0.703) during the booting and flowering period. The highest Margalef richness index was recorded during filling and ripening stage (2.526), and the lowest (1.483), during the rejuvenation and jointing stage. [Conclusion]  The Syrphidae, Braconidae and Coccinellidae are the most important natural enemies of wheat pests in coastal Jiangsu during the wheat growing period. Full protection and utilization of natural enemies can reduce the use of chemical pesticides, improve wheat quality, and increase economic, environmental and social benefits.