China is a huge country in land, in population, in history and in changes. Records covering over five thousands of years of China make a great deal of challenges and opportunities in the age of Digital Earth. More over, pixels from satellites provide the detail information about the global environmental changes in China. Based on the comparison studies of digital information of the earth sciences between China and the world else, authors indicate the keys for China to make the Digital Earth succeed. They are: constructing an integrated data and information policy system; establishing distributed national data centers, making a multiple-disciplinary training and education program; developing a data and information services market; enhancing the integration between the earth sciences and IT technology, including those of satellite, computational sciences, computer, telecommunication and so on. The international cooperation is important for China to develop the China’s Digital Earth.