Oxygenation robotic fish based on jet propulsion

The invention discloses an oxygenation robotic fish based on jet propulsion. The oxygenation robotic fish comprises a sensing interaction module, an ascending and descending module, a power module, anoxygen concentration measurement module, a jet pump module, a robotic fish skeleton and a shell, The sensing interaction module comprises an ultrasonic sensor, a data receiver and a controller. The controller is connected with the ultrasonic sensor, the data receiver and the ascending and descending module through data lines. The jet pump module is installed in the middle of the robotic fish skeleton and comprises a driving fluid suction pipe, a working fluid suction pipe, a jet pump and a discharge pipe. Power can be provided for movement of the robotic fish while oxygenation is conducted through the jet pump; Oxygen can be accurately monitored and supplemented through cruising of the robotic fish in a net cage, and it is ensured that the oxygen concentration in the net cage meets the fish survival requirement.