By using the experimental test data such as the total organic carbon content（

TOC

） and porosity and the drilling and testing data of horizontal wells

the researches on the source-reservoir coupling relationship of marine shale reservoirs in Nanchuan district and the reasons for typical high and low field wells have been carried out. The researches show that the shale organic matter and storage space are closely connected and interdependent

forming a complex source-reservoir coupling relationship between each other. The

TOC

（the source） and the porosity（the reservoir） are the key parameters to characterize th

e source-reservoir configuration types. There are 12 categories

including high-carbon with high-porosity

medium-carbon with medium-porosity

and low-carbon with low-porosity

for the semi-quantitative evaluation. By introducing this new method of source-reservoir classification

the evaluation criteria of source-reservoir configuration for Ⅰ

Ⅱ and Ⅲ shale reservoirs of Wufeng-Longmaxi Formation in the study area are established. Combining the source-reservoir configuration evaluation and gas test production analysis of 8 horizontal wells with similar mining technology in the study area

it is shown that the larger the proportion of class Ⅰ source reservoir configuration in horizontal wells

the higher the fracturing gas test production. The new source-reservoir classification method is a practical tool for geological evaluation and post-compression productivity analysis of shale gas wells

and has the popularization significance.