The utility model relates to a culture water vehicle with the function of automatically adjusting rotation speed, which comprises a floating seat, a water lifting device and a detection unit. The water lifting device is installed on the floating seat, which comprises a driving module, a control module and a impeller. The driving module is connected with the control module and the impeller to rotate the impeller under the control of the control module. The detection unit is used to generate the corresponding floating seat. A sensing signal of water level change for the control module to adjust the speed of the driving module driving the impeller.In this way, the operation of the aquaculture water truck can be adjusted automatically according to the water level to reduce its energy consumption, and the aquaculture pond can also maintain the expected amount of dissolved oxygen as much as possible.一種具自動調整轉速功能之養殖用水車，包含：一浮座、一揚水裝置及一偵測單元，該揚水裝置安裝於該浮座，包含一驅動模組、一控制模組及一葉輪，該驅動模組連接該控制模組及該葉輪，以受該控制模組控制而轉動該葉輪，該偵測單元，用以產生對應該浮座之水位變化的一感測訊號，以供該控制模組調整該驅動模組驅動該葉輪的轉速。藉此，讓養殖用水車的運作可依水位深淺自動調整，減少其耗能，亦可讓養殖池盡量維持預期的溶氧量。
