The invention discloses a gas driving type ignition device which comprises an oil storage device, wherein an oil filling opening for filling the oil storage device with oil is formed in a shell of the oil storage device; an oil suction pipe is arranged in the oil storage device and extends to the front end of the oil storage device from the rear end of the oil storage device; an oil suction opening of the oil suction pipe is communicated with the inner part of the rear end of the oil storage device; a gas inlet nozzle is arranged at a position, which is close to the front end, on the oil storage device; a gas storage device is provided with a gas filling opening communicated with the gas inlet nozzle of the oil storage device; the gas filling opening is provided with a check valve; a nozzle is provided with an oil spraying pipe communicated with the oil suction pipe and an ignition device arranged at one end of the oil spraying pipe; an oil spraying valve is positioned between the oil spraying pipe and the oil suction pipe; when being opened, the oil spraying valve allows fuel oil to enter the oil spraying pipe; when being closed, the oil spraying valve stops the fuel oil from entering the oil spraying pipe. The gas driving type ignition device can solve the technical problems that a conventional device for realizing jetting type ignition by adopting gunpowder is high in gunpowder risk, is difficult to carry, is easily out of work due to dampness and is difficult to manage.