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富饶美丽的成都平原，而今却承受着污染的困扰。早在７０ 年代，有关部门就已发现汞污染十分严重。通过一系列探索性研究之后，仍然对汞污染的来源不甚明了而成为谜团。本文通过对地质背景来源，汞的地球化学特征，新一轮地化测量工作的启示，并结合成都平原的基底断裂特征进行探索，初步认为成都平原的汞污染除人为来源之外，还可能与成都平原下，沿基底断裂所产生的地球脱气作用有关。
The rich and beautiful Chengdu Plain is now suffering from pollution. As early as the 1970s, relevant departments have found mercury pollution is very serious. After a series of exploratory studies, it remains a mystery about the sources of mercury contamination. Based on the origin of geologic background, the geochemical characteristics of mercury and the enlightenment of a new round of geochemical survey, combined with the characteristics of basement faults in the Chengdu Plain, the paper initially considers that besides the anthropogenic sources, the mercury pollution in the Chengdu Plain may be related to Chengdu Plain, along the basement of the Earth’s degassing caused by the role of fracture.