To provide a gas charger capable of charging a plurality of kinds of gases, being installed in a narrow space, and improving the financial efficiency.

A first main valve 3 and a second main valve 4 are mounted in a housing 2, an inflow port of the first main valve 3 is connected to a first gas supply pipe 16, an inflow port of the second main valve 4 is connected to a second gas supply pipe 17, outflow ports of the first main valve 3 and the second main valve 4 are connected to a metering pipe 5, a charging hose 12 is connected to a tip of the metering pipe 5, a charging nozzle 13 is mounted on a tip of the charging hose 12, a setting panel 21 is mounted to select the gas to be charged, and a control device 18 is mounted to output a switch signal to the first main valve 3 and the second main valve 4 on the basis of a selection signal received from the setting panel 21.