Global Geopark came into being in 2004,with a strong support of UNESCO(United Nations Educational,Scientific and Cultural Organization).It became UNESCO Global Geopark in 2015,a new designation of UNESCO.Despite a short history,it has demonstrated great development potential,because its philosophy is in line with the current world development trend.The expert-driven mode,together with the on-site evaluation and subsequent regular revalidation system,plays a key role in its healthy,rapid and high-quality development of Global Geoparks.Based on the revalidation results from 2004 to 2020 and the author’s evaluation/revalidation practice, this paper reviews the procedure,evaluation team and methods of the Global Geopark evaluation system,and analyses the revalidation results,in order to find out the possible reasons of red/yellow cards and propose corresponding improvement measures.This paper would provide useful information to Global Geopark researchers, managers and staff members.