Abstract: According to the tectonic setting and sedimentary condition, the conceptual model of oil and gas exploration, "BRCF" model, is built on the basis of the origin theory of serpentinized ultrabasic rocks. B is the ultrabasic rocks intruding the earth's crust. R is the oil-bearing reservoir. C is the cap rock. F is deep fracture. The model was used to analyze the reservoir-forming regularity of typical oil and gas fields in Persian Gulf and China's continent and to predict the oil and gas targets in China's continent.