Abstract: The hydrocarbons are universally distributed in meteorite, comet, moon, major planets of solar system and their satellites and the universe. The existence of plentiful methane, liquid hydrocarbon and black organic compounds in the Sature's Satellite Six is a typical example. Based on the planetary geology and the evolution history of the Earth, the possibility of inorganic hydrocarbon in the Earth is discussed. Some models for the inorganic hydrocarbon generation of the Earth at home and abroad are introduced, which include the earth outgassing model proposed by Gold and Du Letian; the Earth absorption-accumulation model by Ouyang Ziyuan; Fischer-Tropsch model by Volivofski, Sarkisuv and Szatmari; multi-origin model by Zhang Jinglian. According to Pb, Sr and Nd isotopic data, the origin of some oilfields in China can be distinguished. By means of the inorganic origin theory of hydrocarbon, China's oil fields distribution regularity can be explained and the future exploration targets can be predicted. The inspiration from the Cassini Mission is that there are huge petroleum reserves to be explored in the deep Earth, and based on the inorganic origin theory of hydrocarbon, it is possible to find out some giant oil-gas fields.

Key words: the Earth inorganic hydrocarbons, meteorite, Sature's Satellite Six, celestial body evolution of, solar system