The invention discloses a chemical spraying device for
aquaculture. The chemical spraying device for
aquaculture comprises a floating plate and a remote controller. A first supporting rod, a second supporting rod, a third supporting rod and a fourth supporting rod are fixedly connected to the bottom of the floating plate from
right to left successively, and the bottoms of the first, second, thirdand fourth supporting rods are fixedly connected to an
oxygen concentration sensor, a temperature sensor, an
oxygen generator and a first motor, separately; and the output shaft of the first motor isfixedly connected to a
propeller. By action of a second steering rod, a belt
pulley, a first electric telescopic rod, a third motor as well as a second electric telescopic rod, a second movable joint,a sixth supporting rod, a fifth supporting rod and a first movable joint, the adjusting demand on spraying angle and spraying range of a
nozzle can be met, and the spraying efficiency is improved effectively; and the device is remotely controlled by using the remote controller, thereby bringing great convenience to chemical spraying work of people.