The remote sensing technology was employed to investigate the types and the area of Guangdong wetlands.The results showed that: types of Guangdong wetlands were very rich.There are 5 types and 20 subtypes of wetlands, including all of the types and 80% subtypes of the wetlands in our country.The total area of Guangdong wetland was 1 864 101.3 hm², making up 10.4% of the total land area of Guangdong Province.At the same time, the coast wetland area was 1081988.3hm², making up 58.04% of the total area of Guang dong wetland.Furthermore, there are plenty of wild life in the wetland, and many are the species of rare and in danger.Therefore, conservation of wetlands in Guangdong is very urgent and important.