PURPOSE: To obtain a large amt. of spraying with less injection gas with a suction type spraying method by using the injection gas for the purpose of increasing the pressure in a hermetically closed original liquid tank.

CONSTITUTION: The user directs an injection port 13 to the direction where an original liquid is to be sprayed and pushes a button 14 in the stage of using the spraying device. Then a stop valve is opened by a stem 12 and the injection material in a bomb 9 is fed through a lead-out hole 11 and a vent pipe 19 to the inside 5 of an original liquid tank 1. As a result the pressure in the inside 5 is increased and the original liquid and the gas incorporated in the state of gas in the original liquid are sprayed through a liquid passage pipe 15 from the injection port 13 of the button 14. The button 14 which is an injection member and the lead-out hole 11 of the stem 12 are communicated with each other in this case so that the two roles of pressurizing the original liquid in the original liquid tank and the atomizing and diffusing of the original liquid to be ejected from the liquid passage pipe are performed simultaneously.