Abstract: The paper aims to explore the mechanism of perception to climate change in the adaptive decisionmaking process. Based on the in-depth interview data and the framework of“perception-adaptation”, we analyzed the factors affecting climate change adaptation decision and options of residents in Jiaozhou Bay by using the binary Probit model and Poisson regression model. The results showed that the majority of residents already perceived climate change, and more than half of the residents adopted adaptation measures; most residents were satisfied with the effects of the adaptation measures; measures adopted by the residents were from 0 to 4, with an average of 1.07; there were still great gaps in the popularization and diversity of the adaptation measures. The results also showed that there were some differences among the main factors that affected adaptation decision and options in Jiaozhou Bay; however,“the perception to climate change of residents”had a great impact on both adaptation decision-making and adaptation options, among which“the perception of precipitation change” and“the perception of meteorological disaster loss” were the most significant factors.