This paper is proposed here on the presupposition of the Special Report on Emissions Scenarios for global climate and sea-level rise of the 21st century，completed by the Intergovernmental Panel on Climate Change（IPCC） in 2001. The location，types and distribution of coral reefs in China，and their classification based on the maturity of coral reefs well be introduced in this paper. Also the influence of global sea-level rise on coral reefs of China has been estimated. In the 21st century，within coastal areas of China，the estimated highest sea-level rise will be in the South China Sea，attaining 32 ~ 98cm in their heights  and  0.32 ~ 0.98cm/a in their average rate of rise. According to the theoretic comparison of sea-level rising rate with the growth rate of coral reefs，coral reefs of China basically may growth  synchronously  with  the former，even if the sea-level rise with the estimated highest rate， it does not threat the exist of coral reefs. Based on the higher maturity of coral reefs of China and their lateral growth tendency，the future global sea-level rise is making a favorable condition for their growth. Based on the existence of higher sea-level and higher temperature of surface sea water since Holocene from 6000a BP，it is quite evident that the sea-level rise in the 21st century can not threat the existence and development of coral reefs of China. To respond the global sea-level rise extant reef islands of China may reach a balance of the sea-level rise and the rise of islands，and the latter may stand over the future risen sea-level. But the manual buildings on islands well be soak，flooded， and be dredged and destroyed， and it must get some corresponding defensive measures according to the range and rate of the global sea-level rise.