A spray device 100 includes a base seat unit 1, a liquid container 2 having a liquid-receiving space (21 figure 4), a nozzle unit 3 including a nozzle 32 and a drawing tube (33 figure 4). There is an electric gas pump 4 . The nozzle has an outlet 321a, and a gas inlet (321b figure 4) and a liquid entrance (321c figure 4) that are in spatial communication with the outlet. The drawing tube spatially interconnects the liquid-receiving space and the liquid entrance. The electric gas pump has a gas supplying hole (41 figure 3) spatially communicated with the gas inlet. The electric gas pump is operable to provide a gas into the gas inlet of the nozzle through the gas supplying hole, such that the liquid stored in the liquid-receiving space of the liquid container is drawn into the liquid entrance through the drawing tube and thereafter exits the outlet of the nozzle unit together with the gas.