The content of hydrogeology is abundant in China, with various hydrogeological types and obvious regional hydrogeological characteristics. The development history of geology has a significant influence on the hydrogeological characteristics of the coalfield in china. According to the regional characteristics, China is divided into five major areas. Characteristics of each region from the coal base, internal, cover layer is described separately.% 中国水文地质研究内容丰富，不仅水文地质类型多样，而且水文地质特征区域性明显。地质历史发展进程对中国各煤田水文地质特征有显著影响。按区域性特征将中国划分为五个大区。每个大区的特征从煤层的基底、内部、盖层分开描述。
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