To provide a gun for squirting scented fluorescent color liquid, which can squirt the scented fluorescent color liquid only by rotationally pulling out a squirt lever working also as a safety device, surely making a hit and marking by continuous injection of the scented fluorescent color liquid and exerting an effect on pursuit and arrest of a criminal or the like.

A gun body includes a front tube and a rear tube. One end of the front tube and one end of the rear tube are joined by a screw. A cap having a containing opening for a scented fluorescent color liquid container, which is an injection opening, is provided at the other end of the front tube. The scented fluorescent color liquid container is built inside. A center pin formed in a pointed end shape at both the front and rear and having a hole penetrating in both directions is held concentrically and slidably at a central part of a fixed tube attached at the front in the rear outer tube. By rotationally pulling out the squirt lever using, as a support shaft, projections of the rear outer tube installed on the outer periphery, a slide tube connected to one end of the squirt lever moves forward. One end of the center pin opens a gas cylinder, the other end opens the rear of the scented fluorescent color liquid container, the front end of the scented fluorescent color liquid container is also opened simultaneously, and injection is performed.