In this paper,the basic concept of the influence of earth rotation parameters on the physical geography factors,such as climate,sea and hydrology, were expounded;and the possible mechanism of influence was discussed.Besides, the author revealed a series of facts which indicated that variations of certain physical geography factors were related to the variation cycle of above-mentioned parameters correspondingly;the secular variations of precipitation and atmospheric temperature in some regions of our country were related to these parameters; The secular variations of the sea-level elevation,the sea water temperature in certain regions of the world,and the hydrological characteristics of the Yangtze River Basin also were related to it.Therefore,the author considers the parameters of earth rotation is one of the control factors on physical geography process.