Climate change is a global crisis that all of humanity must collectively address. Therefore, there is a need to educate future generations, namely infants, on climate change through international cooperation. In this context, this study aimed to analyze picturebooks on climate change read by infants in China and Korea, two neighboring countries in East Asia. To achieve this, we examined the publication status of climate change picturebooks in both countries, identifying similarities and differences in content. The research yielded the following results. First, there were significant differences in the publication status of climate change picturebooks in China and Korea. Second, both Chinese and Korean picturebooks realistically presented the causes of climate change, but depicted its impacts as a combination of real and fictitious effects. Finally, Korea demonstrated a broader range of actions to mitigate climate change compared to China. Based on these findings, we provided insights for climate change education in China and Korea, and proposed inter-country educational cooperation.