The invention provides a method for quantitatively evaluating the degree of enrichment of contactor-relay control natural gas reservoirs, and belongs to the technical field of gas field exploration. The method comprises the following steps: selecting six geological factors related to the degree of enrichment of the contactor-relay control gas reservoirs: average gas generating strength in a source rock-fault contact point, source rock-fault contact area, reservoir formation period source-stored residual pressure difference, natural gas longitudinal migration distance, fault dip cosine value, and a preservation condition parameter; selecting a plurality of proven gas reservoirs, obtaining corresponding six factors and a enrichment degree parameter of the proven gas reservoirs, drawing a scatter diagram, and obtaining a relation between a single factor and the degree of enrichment; establishing a multi-factor prediction model of the degree of enrichment of contactor-relay control natural gas reservoirs by treating the relation with multiple linear regression; and primarily selecting an exploration potential region, obtaining corresponding six factors of the exploration potential region, and selecting an exploration potential region according to the multi-factor prediction model. As a multi-factor comprehensive prediction model is established, the quantitative evaluation precision of the degree of enrichment of the contactor-relay control gas reservoirs can be improved effectively.