A positioning device for a foldable scooter, the positioning device comprising a frame component; a inclined tube component, coupled to the frame component; a front fork component, coupled to the inclined tube component; a handlebar, coupled to the front fork component; and two purfles, coupled to the frame component; wherein each purfle further comprises a limit groove, wherein a locating pin is connected to the limit groove and connected to a button, wherein the button is removably connected to the inclined tube component through a spring, wherein the inclined tube component is removably connected to the purfles through a fast unloaded component.