The distribution of chiggers and Orientia tsutsugamushi, were investigated at five sites in Seogwipo, Jeju Province in 2017. To accomplish this, 100 Sherman traps were installed to collect the larva of mites from 28 wild rodents and analyze them in April, October and November. A total of 2,560 chiggers were collected, among which 1,283 underwent inspection for Orientia tsutsugamushi and 1,277 were found to contain the organism. Leptotrombidium zetum accounted for 517 of the 1,277 species, or 40.5% of the total, making it the dominant species. Other major species included Leptotrombidium scutellare, which were found in 432 (33.8%) samples, Neotrombicula nagayoi, which was found in 141 (5.5%) samples, and Leptotrombidium orientale, which was found in 72 (2.8%) samples. The majority of the species collected in April were Leptotrombidium zetum, but in fall, the majority were Leptotrombidium scutellare and Leptotrombidium zetum. Additionally, Leptotrombidium scutellare was mainly collected