By the significance of geographical philosophy, it is impossible that human understand the arcanum of the nature before researching secret of human himself. So we must seek the complex relationship of man-land from the significance of the space-time field of humanity. Base on the analysis of basic concept and characteristics of the space-time field of humanity, the philosophical connotation of the space-time field of human nature had been acknowledged by the reciprocity of man-land and its sense flow. Then the random change of sense flow of the space-time field of humanity had been analyzed. The author think that sense flow of the space-time field of humanity would be transfer to new researching object with studying embed of behavior geography. At the same time, this article had submitted first the science concept of the potential sense geography. The potential sense geography would develop the science advantage once again.Finally, The writer had expounded that essence connection of the space-time field of humanity and human care for society, libidinal society.