Abstract: The formation and distribution of source rocks are affected by many factors, among which tectonism is an important factor. The study shows that fault can impact on source rock largely, and big fault controls the forming of neighboring rich hydrocarbon depression obviously. Meanwhile, heat produced by fault activity also influences the evolution of source rocks. The heat brought by volcanic magma intrusion can be considered as an additional heat source to enhance the source rocks' evolution. In addition, some rare elements in the heat flow also promote the distribution of source rocks and increase hydrocarbon generation rate. In tectonic activity, over pressure caused by compression also has an impact on the source rocks in a certain extent.