The utility model relates to a water tank aeration device with an energy-saving module, which mainly comprises a main floating vessel, and an electric module is arranged on the main floating vessel, the electric module mainly comprises a speed reduction unit, the deceleration unit is electrically connected to a motor And the unit is connected to the deceleration unit, and the bearing unit is coupled to the deceleration unit. The electric module is electrically connected to an energy saving module. The energy saving module further includes a control unit, and the control unit is electrically connected. The illuminating unit is electrically connected to the air pressure detecting unit for transmitting the detecting signal to the control unit, and further comprises a plurality of connecting bases, one end of each connecting bracket is connected to the two ends of the bearing, and the connecting seats are further connected One end is respectively connected with a rotating shaft, and a plurality of blade sets are arranged on each rotating shaft, and the blade sets are rotated by the electric module.一種具有節能模組之水車增氧裝置，係主要包括一主浮船，於該主浮船上係設有一電動模組，該電動模組係主要包括一減速單元，該減速單元係電性連接一馬達單元且連動，於該減速單元上係穿設一軸承，係與該減速單元連動，該電動模組又電性連接一節能模組，該節能模組更包括一控制單元，該控制單元係電性連接一照度單元及電性連接一氣壓偵測單元，用以發送偵測訊號至該控制單元，另包括複數連接座，各連接座一端係連接於該軸承兩端上，該些連接座另一端係分別連接一轉動軸，於各轉動軸上設有複數葉片組，透過電動模組帶動該些葉片組轉動。
