To a considerable extent, the study of human in geography has affected and is affecting the development process of the subject of geography from its ancient embryonic form to the high development of modern one. In general, the question of human in geography is mainly manifested in two aspects: as a researcher and as a research subject. From the perspective of human in regional human-land system of geography, this article analysis and interpret the human's economic rationality, instrumental rationality and scientific rationality in the basic hypothesis of human nature. By generalizing all kinds of human nature's view-points such as economic man, political man, ecological man, social man, cultural man, complex man, we issued the matters of common concerned in geography which include individuality and group, micro and macro, stratum and class, perception and the ration; and we concluded main features, interactions, types and divergences in human-land relationship system. Based on the combination of different geographical human in methods, canonical forms and experiences, we advanced a new geographical human platform to study and designed the platform's main structure and logic relations. Overall, in present stage of theoretical exploration and the general paradigm of the regional human-land relationship system study, we can rely on basic analytical framework geographical human analysis platform to reveal the coupling mechanism demographic processes, economic processes, and social processes, to understand and seek different scales of regional spatial structure, time process, organizational change program, the overall effect, coordinated and complementary laws, and to explore regional system structure, stability and overall behavior of the system function.