The invention provides a composite type gas storage cabinet system which is used for biogas storage and discharge. According to one aspect, the system comprises at least one parallel multi-bag-cavity gas storage cabinet, a pressurizing device, at least one large-capacity gas storage cabinet, a guide system, at least one pressure sensor, at least one controller, at least one conveying device and at least one one-way valve; the parallel multi-bag-cavity gas storage cabinet comprises a bottom, an outer housing and a gas storage bag; the gas storage bag comprises a plurality of stacked flexible bag cavities, and adjacent bag cavities are in fluidic communication; the pressurizing device is arranged above the gas storage bag for applying pressure to the gas storage bag to obtain gas output pressure; the large-capacity gas storage cabinet comprises a base, an outer housing and a flexible gas bag; the bottom of the flexible gas bag is open, and the flexible gas bag is arranged on the base; and a plurality of fixing rings are circumferentially arranged on the flexible gas bag, and the flexible gas bag is connected to circumferential parts through the fixing rings.