An aquaponics method and a system including a rearing system and a cultivation system integrated with each other comprising, a rearing tank (1) of the rearing system； cultivation beds (2) of the cultivation system； and a water storage tank (16), wherein the cultivation beds (2) are arranged in two or more stages in a vertical direction； the rearing tank (1) and the water storage tank (16) each have a size and a depth capable of storing a liquid supplied to the cultivation beds (2) in two or more stages； the aquaponics system further comprises a water supply pipe (4) arranged between the water storage tank (16) and the cultivation beds (2), the aquaponics system further comprises distribution pipes (7) each arranged so as to extend from the water supply pipe (4) to the cultivation bed in each of the stages； the water supply pipe (4) is connected to a pump (3), and the pump (3) enables the liquid supplied from the rearing tank (1) to the water supply pipe (4) to be supplied to the cultivation bed in each of the stages through each of the distribution pipes (7)； each of the cultivation beds (2) includes a bell siphon (5)； the bell siphon (5) of each of the cultivation beds (2) has an outlet connected to a water discharge pipe (6)； the water discharge pipe (6) has a lower end arranged above a liquid surface in the water storage tank (16) so that the liquid collected in the water discharge pipe (6) from the bell siphon (5) is caused to fall onto the water storage tank (16), to thereby enable the liquid in the water storage tank (16) to be aerated； the configuration forms a cultivation circulating system in which the liquid circulates through the water storage tank (16), the pump (3), the water supply pipe (4), the distribution pipes (7), the cultivation beds (2), the bell siphons (5), the water discharge pipe (6), and the water storage tank (16)； the configuration also forms a rearing circulating system in which the liquid in the water storage tank (16) is fed to the rea
