There exist inevitably large numbers of conflicting interests in the science popularization of climate change studies. These conflicts are typically associated with political stance, strategy of industry development, academic viewpoints and media strategy. In order to enhance and improve science communication of climate change studies, public interest as an ethical priority should be strengthened. institutes and agencies sponsored by the government or public fund are supposed to share their scientific resources to promote the transparency and demystification. Scientists should be responsible for the complete stages of research, including the popularization. The legal regulation and ethical rules for handling conflicting interest should be accelerated to establish, including disclosure and withdraw. The media should be required to keep the moral principle of rigor and accuracy. Finally, the scientific understanding of climate change should be improved so as to raise fundamentally the capability of science popularization of climate change studies.