Abstract: During the rotation of the earth, spherical continental crusis always move toward the direction in which the rotation inertia of the earth is decreased, that is，toward South pole and North pole. The revolution of the earth results in northward migration of spherical continental crusts and migration of the continental crust of southern hemisphere toward the equator, and thickens the crust of northein hemisphere, richens continental crusts. The characters of the revolution and rotation of the earth might have influence over the direction of oil and gas migration in oil and gas bearing basins. In a lot of oil and gas bearing basins in the earth, rich in north and poor in south is a general phenomenon, with no exception of both Junggar basin and Talimu basin in Xinjiang.