陆内碰撞和流体作用都是当前地球科学的前沿领域，但陆内碰撞体制流体作用以及有关成矿作用的研究仍很薄弱。文章以陆内碰撞成岩成矿模式为基础，通过理论分析，建立了陆内碰撞体制流体作用的模式，即在陆内俯冲体制中，随板片俯冲深度的增加，依次产生改造流体、变质流体和岩浆流体，所产生的流体在空间上具有分带性，并造成岩石、元素、矿化蚀变的成带规律分布；陆内俯冲的早期挤压阶段的流体作用以深部物质分泌的上升流体（改造、变质和部分熔融）为主，晚期伸展阶段以浅层下渗流体（来自大气降水）循环为主，中期由挤压向伸展的转变阶段为深分泌上升流体与浅层下渗流体的混合作用。为检验模式的科学性，选择典型的陆内碰撞带——东秦岭作为实例解剖，发现该区的陆内碰撞作用与金矿床等的成矿作用在时间、空间、地质地球化学特征等方面都十分吻合，且与理论推导的陆内俯冲体制的流体作用规律一致。对若干典型矿床成矿流体的氢同位素研究表明，成矿流体的性质、来源和演变特征等与理论推导的陆内碰撞体制流体作用规律完全符合。 Intra-continental collisions and fluid interactions are the frontiers of current geosciences, but the study of intra-continental collision fluid systems and their implications for metallogenesis remains weak. Based on the in-continent collision diagenesis and metallogenic model, through the theoretical analysis, the mode of intra-continental collision fluid system is established. In the intra-subduction regime, with the increase of plate subduction depth, the altered fluids and metamorphic fluids And magmatic fluids, the resulting fluids are zonally spatially distributed and cause a regular distribution of rock, element and mineralization alteration. The fluid effect of early subduction stage of inland subduction is characterized by the rising fluid (Remodeling, metamorphism and partial melting). The late stage of extension is dominated by circulation of shallow infiltration fluid (from precipitation), and the middle stage of transition from extrusion to extension is deep-seated uplift fluid and shallow infiltration fluid Mixed effect. In order to test the scientific nature of the model, a typical intracontinental collision zone, East Qinling, was selected as an example to show that intra-continental collisions and gold mineralization in the area are characterized by time, space and geological and geochemical characteristics Which are in good agreement with the fluid laws of in-continent subduction system derived theoretically. Hydrogen isotope studies of ore-forming fluids from several typical deposits indicate that the nature, origin and evolution characteristics of ore-forming fluids are in good agreement with the theoretically derived fluid laws of in-continent collision systems.