The volume fracturing provides a new light for large-scale economic and effective development of tight sandstone gas reservoir. In order to analyze the fracture distribution and propagation laws during the volume fracturing, fluid-solid coupling models of the sandstone body were established with the RFPA-flow code based on the regional reservoir characteristics in Block Su53, Ordos basin and seepage-stress coupling theory. Then, the effects of guide fracture, natural fracture, and confining pressure on the fracture propagation were simulated with the proposed models during the volume fracturing. Comparing volume fractured wells with common fractured wells and without fractured wells, technology advantages of volume fracturing show up.