The utility model relates to a multifunctional pet aquarium.The utility model comprises an aquarium body for holding water.The isolation device provided in the body of the aquarium,A plurality of screw holes formed on the isolating device and connected with both sides of the isolating device.The collection space between the internal wall of the aquarium and the isolation device,And the drainage device connected with the sewage collection space,The spiral holes are used to generate vortex flow and connect with the sewage collection space.So when the drainage device is turned on,The water above the isolation device will be discharged from the drainage device through the screw hole and the sewage collection space.Because of the structure of the screw hole, the vortex flow is generated above the isolation device.And then the attraction is strengthened to speed up the discharge.And to attract dirt deposited or floating around the swirling water,Thus, the utility progress of the utility model can achieve rapid and effective drainage.本新型為有關於一種多功能寵物水族箱,其包括有供容置水的水族箱本體、設於水族箱本體內之隔離裝置、複數形成於隔離裝置上且通連隔離裝置兩側之螺旋孔、界定於水族箱本體內壁面與隔離裝置間之集汙空間、及與集汙空間通連之排水裝置,而螺旋孔係供產生漩渦水流且與集汙空間通連;故當開啟排水裝置時,隔離裝置上方的水會經過螺旋孔和集汙空間從排水裝置排出,且因螺旋孔之結構使隔離裝置上方產生漩渦水流,進而加強吸引力使排出速度加快,及吸引漩渦水流四周沉積或漂浮的髒汙,藉此令本新型達到排水迅速且有效排汙之實用進步性。