华北型煤田是我国重要的煤炭基地，水文地球化学勘探是解决煤田开采过程中一系列水文地质问题的重要手段。在概化华北型煤田典型水文地质结构的基础上，分析采动影响下典型水文地质问题，揭示了华北型煤田地下水多场耦合关系与水文地球化学勘探作用机制及其测试分析处理技术；通过回顾水文地球化学理论发展历史，明确华北型煤田水文地球化学勘探技术的可靠性；汇总地下水常用的水文地球化学组分及其测试仪器，并从图解法、数理统计法、物理模拟和数值模拟等方面阐述水文地球化学勘探的技术手段；在此基础上，从地下水资源评价、突水水源动态识别、水文地球化学时空演化、地下水动力异常反演、地质结构异常反演、地下水混合模式构建及水热资源勘察等角度综述了多场耦合下华北型煤田水文地球化学勘探关键技术的应用研究进展，明确了水文地球化学勘探的优越性与可操作性。结合华北型煤田水文地质条件，提出华北型煤田水文地球化学勘探典型技术核心及其存在的问题，指明了水文地球化学勘探技术研究的努力方向。

North China type coalfield is an important coal base in China, and hydrogeochemical prospecting is an important means to solve a series of hydrogeological problems in the process of coal mining. The typical hydrogeological problems under the influence of mining were analyzed based on the generalization of the typical hydrogeological structure of North China type coalfield. Meanwhile, the multi-field coupling relationship of groundwater and the mechanism of hydrogeochemical prospecting in North China type coalfield, as well as its testing, analysis and treatment technology, were revealed. Besides, the reliability of hydrogeochemical prospecting technology in North China type coalfield was pointed out by reviewing the development history of hydrogeochemical theory. In addition, the commonly used hydrogeochemical components and the testing instruments of groundwater were summarized, and the technical means of hydrogeochemical prospecting were elaborated from graphical method, mathematical statistical method, physical simulation and numerical simulation, etc. On this basis, the progress of research on application of key technologies for hydrogeochemical prospecting under the multi-field coupling in North China type coalfield was reviewed from the aspects of groundwater resource evaluation, dynamic identification of water inrush sources, spatiotemporal evolution of hydrogeochemistry, anomaly inversion of groundwater dynamics, geological structure anomaly inversion, construction of groundwater mixed mode and hydrothermal resources exploration, etc. Hence, the superiority and operability of hydrogeochemical prospecting was clarified. Moreover, the typical technical core of hydrogeochemical prospecting in North China type coalfield was proposed in combination with the hydrogeological conditions of North China type coalfield, and the existing problems were pointed out, indicating the effort direction in the research of hydrogeochemical prospecting technology.