This is a descriptive case study of the capacity building program in the field of climate change cooperation achieved by UNITAR Jeju Cifal and GTC(Green Technology Center). The study included the GTC's expertise in climate technology and the UNITAR's collaboration program, an international training body in the environment, peace and security. First, in this study, the results of the satisfaction survey of the education and training in 2017 were analyzed. Education demand for climate change adaptation was shown to be high, and technology demand needed in developing countries was found to be the highest demand for ecosystem monitoring/restoration. Second, an analysis of the program for 2018 showed that South Korea's Eco-city project case is also worth referring to Asian Pacific countries. It was also found that exchanges and discussion activities among participants were more helpful than simple lectures. Meanwhile, development of city-share programs, including self-evaluation, was found to be necessary. Finally, we discussed ways to improve the city-share program in UNITAR. Sharing urban information among peers in this program is beneficial. However, it is necessary to plan programs that have a prior understanding of the culture and background of participants. And it is also important for participants to follow up on their own goals by setting up action plans and checking them after training. It is also necessary to make it clear to participants that there is an organic connection at each stage of the program. That way, participants will set up and plan problems in the climate technology sector of their own country or city, and the effect of education and training will be even greater.