Abstract: Abstract：Quantitative research on the equilibrium state of man-land relationship in Qinba Mountains is conducted through constructing a supply and demand matching model, the interaction relationship and the influence mechanism between the spatial supply capacity and the spatial demand intensity are analyzed by means of OLS least squares method and GWR geographical weighting method, and hence space control model of pertinence and differentiation is put forward on these basis. The main conclusions include: (1) There is obvious spatial dislocation of supply and demand in Qinba Mountains, the supply capacity is high in the middle and low in outskirts. The supply index of districts and counties in the middle with high value is mostly between 0.72 and 1.16, while the supply index of districts and counties in outskirts is mostly less than 0.6. However, the demand intensity is basically opposite to supply capacity. The demand intensity of districts and counties in the middle areas is all less than 0.14, while the demand intensity of the peripheral and eastern areas is generally high, and the highest value mainly appears in districts and counties at the northern and eastern foothills of Qinling Mountains and at the middle reaches of Han River; the unmatched supply and demand is originated from ineffective space resource allocation separated by complex terrain. (2) There is an interaction between the two ends of man-land supply and demand, and there exists clear spatial differentiation in the interaction degree under the influence of terrain; (3) The equilibrium index of man-land relationship is generally low, and extremely uneven in distribution, which is clearly characterized by ‘being low in the middle and high in the periphery’. The quantity ratio of districts and counties that are of inefficient equilibrium, coordinated equilibrium, and spatial disequilibrium is about 11:3:2; (4) The research areas can be divided into four control subareas: development-controlled area, development-promoted area, development-optimized area and development-dispersed area, and the man-land regulatory countermeasures are formulated on the basis of the equilibrium state.