The invention relates to a water taking and spraying dual-function garden watering device, which comprises a water taking pump pipeline (60) and a double-option water extracting pool tap water valve, a water pump and a pipeline, wherein the water pump and the pipeline are connected to a water pool, and the drought-resistant watering can be realized during the tap water failure. The water can be saved by a spraying water throwing device, and a reverser adopts a deflection innovation process, so that record-breaking reliability and durability are realized. The invention also relates to an intelligent swinging water spraying device, which comprises a moisture humidity measuring and controlling device, a joint, an energy-saving type spraying timer and a water sprayer, the joint can be used for finely adjusting the size and the screw pitch of a threaded ring, the energy-saving type spraying timer is provided with a multi-purpose connector, and the method belongs to a method for directly measuring and controlling the soil humidity at low price. The principles that when springs are compressed, the steel wire pitch is decreased, and in addition, the spring diameter is increased are utilized, each ring layer separation of a plurality of finely-adjustable threaded rings (41) is reduced, namely screw pitch is reduced, along with the decrease of the steel wire pitch through the side surfaces of the clamping springs (48), and in addition, the plurality of finely-adjustable threaded rings (41) are tightly extruded in the radial direction along with the increase of the spring diameter, so that the finely-adjustable threaded rings approach to the center, the threaded joint can be fast and tightly clamped at the same time in the axial direction and the radial direction, and the ingenuity is realized.