Abstract: Based on years' study and practice, the author considers that conditions of global petroleum geology are varied. In the light of dynamic mechanism of plate motion, type of ancestral basin, hydrocarbon resource potential, development strategy and trend for the oil-gas resources, the authors put forward some important problems for tentative discussion, which include original unity of mechanisms of global tectogenesis, sea-land changes, Palaeozoic metamorphism, formation and destruction of resources and development strategy and trend for the oil-gas resources. The study and discussion of these problems in recent years are of important guiding significance especially for development strategy and trend for the oil-gas resources.