Abstract: In view of problem that meaning of digital coal mine ca't be understood fully in construction process of demonstration mine of digital coal mine in China, the paper discussed concept and characteristics, included contents and present condition of construction of digital coal mine. It analyzed differences between construction of digital coal mine and construction of non-coal digital mine of other industries and briefly introduced key technologies that need be researched and tackled emphatically in construction of digital coal mine during "12th Five-year Plan" of China.