The invention belongs to the technical field of device throwing and launching, and particularly relates to a launching device. According to the technical scheme, a pneumatic type launching device is characterized by comprising a launching cylinder (9), a relief valve installed in a cylinder body of the launching cylinder (9), an electromagnetic valve (1) and an air inlet nozzle (2), wherein the electromagnetic valve (1) and the air inlet nozzle (2) are installed on an end cover of the launching cylinder (9). According to the pneumatic type launching device, a high-pressure air source is communicated with an inner cavity of the relief valve to enable the inner cavity of the relief valve to form a high-pressure air cavity, the electromagnetic valve (1) is instantly opened through impulse voltage, a valve element of the relief valve is opened under the action of air pressure, pressure air in the high-pressure air cavity of the relief valve is relieved instantly in the launching cylinder (9), and the purpose of launching is realized. When the launching is completed, the valve element of the relief valve automatically returns to an original launching state rapidly, and continuous launching can be achieved by controlling the impulse voltage of the electromagnetic valve.