The invention relates to a temperature-controlled aeration device, which includes a motor, a motor controller, a temperature-controlled switch, a fixed plate, a fixed piece, a fan, a floating piece, a fixed ear, an aeration pipe, a mesh piece, a temperature sensor, a metal shell and Floating water foam, the floating part is composed of floating water foam wrapped in a metal shell, and the outside of the floating part is evenly fixed with 3-4 fixing ears, and four sets of fixing parts are fixed above the floating part. The present invention adopts temperature sensing Automatically control the operation of the motor, thereby indirectly controlling the rotation of the fan, intelligently controlling the aeration of the aeration device, and supplying oxygen to the aquaculture pond or aquaculture pond, so as to avoid the lack of oxygen in the water caused by the low solubility of oxygen due to excessive temperature problem, and is equipped with a retractable aeration tube, which can be adjusted freely according to the depth of the aquaculture pond or aquaculture pond, so that the aeration tube reaches the bottom of the pond, and at the same time, through the mesh, the air and the water body are fully contacted, which greatly improves the Work efficiency and dissolution capacity.