The invention discloses a watering device for agricultural irrigation. The watering device comprises a device shell, a water storage tank, wheels, a power box, a water pump, a water outlet pipe, a water sucking pipe, spraying pipes, valves, a first telescopic pipe, a second telescopic pipe, a motor, a transmission belt, flanges, a nozzle bin, nozzles, connecting pipes, nozzle bases, fixed bases, connecting rods, movable tanks and movable bolts. By arranging the wheels on the lower side of the device base, connecting the motor with a wheel rotating shaft through the transmission belt and driving the wheels through the motor, the whole driving device is driven to move for watering and irrigating, the workload of a user is reduced, and watering efficiency is increased; through the water storage tank and a battery holder, the device is more convenient to use; by arranging the flange at one end of the second telescopic pipe and arranging the flange at one end of the water outlet pipe, the device can be fixed in situ for water pumping and irrigating work by connecting long pipes with one end of the second telescopic pipe and one end of the water outlet pipe.