Determining method of complex mountain-front effective source rock and source rock structural model

The invention discloses a determining method of complex mountain-front effective source rock and a source rock structural model. The method includes the steps of implementing spatial distribution of potential source rock, restoring erosion thickness of different structural unit formations, restoring features of a paleo-geothermal field, determining hydrocarbon conversion type of the source rock by numerical simulation, and determining distribution of the complex mountain-front effective source rock according to the spatial distribution features of the source rock, the hydrocarbon conversion types of the source rocks at different positions of the different structural units and features of abundance of organic matters. Meanwhile, by means of the study based on the method of recovering hydrocarbon conversion of the source rocks in the study area, reliability of resource quantity evaluation is improved, the blank in determining the complex mountain-front effective source rocks is filled, and results help greatly boost the progress of next resource evaluation.