There are vast plains and wetlands in the coastal area of Yancheng City, Jiangsu Province, China, but there lack natural forest lands. After several decades of construction, the Yancheng coastal seawall forests have formed a very unique habitat with north-south direction narrow forest belts. These forest belts have been served as important migrating channels or stopover sites for long-distance migratory birds. Therefore, an ideal place for the study of bird migration has been provided in this site. However, due to the small body size of warblers, it is difficult to identify them in the field which limits our understanding of their migration patterns. Here, by using mist-nets, we collected eight dominant migratory warbler species in autumn in 2018 and 2019, and studied the temporal rhythm of their migration. In total, 608 warblers belonging to 8 species were captured by using mist-nets in autumn in 2018 and 2019, including 245, 131, 107 and 94 individuals for Phylloscopus borealis, P. coronatus, P. tenellipes and P. inornatus, respectively. The total captured number of these four species accounted for 95% of all the captured warblers, indicating that they were the dominant migratory warbler species in this study site in autumn. The daily captured number of P. borealis in 2019 was significantly higher than those of P. tenellipes and P. inornatus (U test, P<0.05). Based on the changing of captured number with time, all these four dominant warblers tended to adopt the migration strategy that pass through the study site rapidly in a concentrated time. This is consistent with the hypothesis that small passerines usually choose time minimizing strategies to get to the winter sites as soon as possible in autumn. There was a significant difference in the temporal rhythm of the four warbler species in both years (K-W test, P<0.05). The warbler P. inornatus was the last one that passed through the study site both in 2018 and 2019. The fat scores of all the four warbler species significantly decreased with the migration time. We consider that the differences in the temporal rhythm of the four warbler species might attribute to the differences in the geographic locations of their breeding sites. In conclusion, the Yancheng seawall forest belt provided an appropriate migration channel for small passerines such as the warblers. More studies should be conducted to explore the important roles of the Yancheng seawall forest belts for bird migration and conservation in the future.