Abstract: A two-stage gas regulator for liquefied-gas containers includes a lower body and an upper cover with a mediate plate disposed therebetween. The lower body has a plurality of inlet ports respectively in fluid communication with a corresponding liquefied-gas container, a first pressure-reduction chamber selectively in fluid communication with one of the inlet ports under control of a switch, a second pressure-reduction chamber in fluid communication with the first pressure-reduction chamber, and an outlet port in fluid communication with the second pressure-reduction chamber and a gas stove. The mediate plate has a first opening and a second opening respectively in alignment with the first and second pressure-reduction chambers. A first membrane is provided in the first pressure-reduction chamber to cover the first opening, and a second membrane is provided in the second pressure-reduction chamber to cover the second opening and for operating a secondary pressure reduction.