Abstract:Science popularization is as important as technology innovation for national progress, however, the establishment of reward on science popularization is underdeveloped in Chinese science research evaluation system. UNESCO Kalinga Prize is known as the “Nobel Prize” in the domain of science popularization and is the most authoritative international award for science popularization. This paper analyses the features of the laureates of UNESCO Kalinga Prize and its award mechanism since the establishment of the Kalinga Prize in terms of national features, positions, educational background, disciplinary subject characteristics, contributions of science popularization of laureates and the changes process of science popularization medium. The study found that only two more laureates of high-income economy than non-high-income economy according to the national income standard of The World Bank, and the national distribution is relatively even; scientists from various countries account for 78% of the total laureates, of which academicians account for 36%, the Nobel Prize laureates account for about 10%, but other professions, such as publishers, politicians and TV program hosts account for 22%. The discipline distribution of laureates is related to the scientific and technological hotpots in the specific period, and the interdisciplinary backgrounds of candidates are more likely to win the prize. The evolution of science media presents an evolutionary trend of “paper media to paper-based media to radio and television-based media to multimedia and institutional integration media”. Finally, we further summarized the award mechanism of Kalinga Prize and proposed advices for China’s relevant departments to promote policy reform in science popularization reward.