Taking the southern Qinshui basin as an example, the hot spot area for the study on co-exploration and commingled production for CBM and tight gas. Through detailed analysis of the spatial combination of sand body and superimposition relationship between sand body and coal seam, its implication to commingling production for CBM and tight gas was discussed. The study shows the sand bodies developed in coal-bearing strata with multiple genetic types, sand body scales and morphological characteristics. The characteristics of sand body architecture are mainly controlled by the sedimentary facies evolution. The spatial combination of sand bodies can be divided into five common types including isolated lenticular sand body, horizontal connection sand body, vertical superimposition sand body, lateral separation sand body and composite overlay sand body. Under the control of deposition, the multiple superimposition relationships between sand body and coal seam are formed. And the superimposition relationships have significant effects on gas saturation of sandstone, pressure in sandstone, coalbed gas content, properties of coal reservoirs and coal reservoir pressure, would control the feasibility and production of commingled production for CBM and tight gas.