The present invention discloses a smart fish farming system comprising an aquarium module, an oxygen supply module, a detection module, a measurement module, an image recognition module, a feed supply module and a control module. The fish tank module is used to accommodate a plurality of aquatic organisms. The oxygen supply module is located around the aquarium module, the oxygen supply module has an oxygen supply tube, and the oxygen supply tube is located in the fish tank module. The detection module is located in the aquarium module and detects the water temperature and water level in the aquarium module to generate at least one water temperature signal and at least one water level signal, respectively. The measuring module is located in the aquarium module and measures the oxygen content in the water of the aquarium module to generate at least one oxygen-containing signal. The image recognition module is located around the aquarium module, and the image recognition module can identify the quantity of a plurality of aquatic organisms to generate quantity information. The feed supply module is located on one side of the aquarium module. The control module is electrically connected to the oxygen supply module, the detection module, the measurement module, the image recognition module and the feed supply module, and the control module has the feeding control information. Wherein, when the control module receives and determines that at least one water temperature signal, at least one water level signal, or both of them do not meet the threshold condition, the control module generates an abnormal message； and the control module receives and determines that at least one oxygen-containing signal is not When the oxygen-dissolving condition is met, the control module drives the oxygen supply module to supply oxygen to the aquarium module via the oxygen supply tube； and when the control module receives the quantity information, the control module compares the quantity info
