The utility model discloses a carrier gas control device, which comprises N gas cylinders, a pressure sensor, an electromagnetic valve, N+1 through pipes and a data uploading interface. A controller controls the on and off of the electromagnetic valve according to the size of the pressure value, and the processing data of the controller can be uploaded through the data uploading interface. Therefore, according to the technical scheme, the automatic control on the gas supply pipeline can be realized, the workload of a user can be effectively reduced, and the working efficiency and automation level can be improved.