The invention relates to an automatic watering device based on internet of things and used for gardening. The automatic watering device based on internet of things and used for gardening comprises a water carrying mechanism and a water storing mechanism which communicate with each other. The water carrying mechanism is arranged right above the water storing mechanism, the water carrying mechanism comprises inversed-cone water pond, the bottom of the water pond is provided with a filter screen, and the top of the water pond communicates with the water storing mechanism. The water storing mechanism comprises a sealed cylindrical main body, and a water chamber, a water guide pipe and a ring-shaped water separating board which are disposed in the main body. The automatic watering device based on the internet of things and used for gardening can be remotely controlled through the internet of things, unobstructed water flow and water control can be directly known, the water carrying mechanism has an opening structure so as to recycle rain water, and an automatic decontamination function is included at the same time； the water storing mechanism has a semi-closed structure, influence on water guide caused by foreign material can be reduced through an inclined water guide structure, and the cost of maintenance can be reduced, and excess loss of water and be reduced.
