To provide a side-push type liquid delivering device using space effectively and having no liquid leak.

The side-push type liquid delivering device includes a front barrel 30 with a side hole 30b formed on the circumference, a push button 32 installed in the side hole 30b so as to make side-push operation possible, a tank 52 for temporarily storing liquid, a point 36 having an opening 36a in the tip end and defining a fluid passage for guiding liquid outside, a guide pipe 34, and a valve mechanism 40 installed between the fluid passage and the tank 52 to perform opening/closing. The valve mechanism 40 is equipped with a slide valve 42 and a slide packing 48 that reciprocate in the axial direction linked with the side-push operation of the push button 32. By pressing the push button 32, the slide valve 42 and the slide packing 48 extrude liquid from the tank 52 to the liquid passage and, by releasing the pressing of the push button 32, the fluid passage and the tank 52 are made non-communicative.