Abstract: Underground 1379 in-situ stress measurement items in underground coal mines of China was collected, including 928 items of the hydraulic fracturing, 427 items of stress release, 24 items of acoustic emission. And based on these measurement data, the first set of in-situ stress parameters database system, namely “China Coal Mine Stress Environment Database”, in underground coal mines was established. This paper focuses on the basic structure of the database system, including the basic data types, the main sources of data, the framework and characteristics of the database system, the display of in-situ stress data（ｉｎ－ｓｉｔｕ ｓｔｒｅｓｓｍａｐ） and so on.