[Aim] Due to their short life cycle and rapid reproduction, the development, survival, and distribution of insects will be significantly affected by global warming.[Method] Taking Yichang City, Hubei Province as a case, data on the occurrence of the tephritid fly Bactrocera minax as well as local temperature over 20 years were collected and analyzed. The annual changes in the beginning, peak, end of adult emergence and oviposition, and their relationship with increasing temperature were analyzed by linear regression to clarify the phenological response of B. minax to climate warming.[Result] From 1981 to 2020, the annual and four-season average temperatures in Yichang increased but at different levels, the biggest increase being in the average spring temperature. In the last 20 years, the emergence of B. minax in Yichang occurred early, the egg laying was delayed, and the emergence and oviposition duration was shortened. In the scenario of the annual average temperature increase by 1℃, the beginning and peak of the emergence of B. minax were delayed by 0.4746 days and 1.026 days, respectively. The end of the emergence was 0.0227 days earlier. Overall, the period of emergence started later but was shortened. The oviposition duration was advanced and prolonged:it started 4.3 days earlier, peaked 1.2 days later and ended 1.1 days later as well.[Conclusion] This study demonstrated that climate warming exerted the certain impacts on the emergence and oviposition of citrus fruit fly in Yichang, which is of great significance to clarify the occurrence regularity of this fly pest and optimize the control measures under climate change in the future.