An aquaponic system, having at least one farming section； each farming section has an aquaculture unit, a vegetable farming unit and a water circulation unit； the aquaculture unit has an outer tank and an aquaculture tank inside the outer tank； the vegetable farming unit has a vegetable farming column and a water collection tank at a bottom part thereof； the water circulation unit has a filter tank, a water pump, and at least one guiding pipe extending from the aquaculture tank to the vegetable farming column； a water inlet of the filter tank is connected with a water outlet of the aquaculture tank； a water outlet of the filter tank is connected with a water inlet of the aquaculture tank； one end of the water pump is connected with the water collection tank, another end of the water pump is connected with the aquaculture tank.
