The utility model relates to an uninterruptible electric filter for an aquarium, comprising: a switch switch having an uninterruptible power mode； an internal power supply unit for providing an internal power； and a judgment control module having a judgment control unit And a pumping pump electrically connected to the judgment control unit of the judgment control module for receiving the internal power or external power to perform a pumping action； thereby, when the switch is in the uninterruptible power mode, The judgment control unit determines whether the external power supply unit provides an external power, and if yes, controls to provide the internal power to the pump, and if not, controls to provide the internal power to the pump, thereby When the external power disappears, the water filtering action can be performed to effectively extend the life of the aquatic organism in the water tank.本新型為一種水族箱用不斷電過濾器，包含：一切換開關，具有一不斷電模式；一內部電力供應單元，用以提供一內部電力；一判斷控制模組，具有一判斷控制單元；以及一抽水泵浦，電性連接該判斷控制模組的判斷控制單元，用以接收該內部電力或外部電力以執行一抽水動作；藉此，當該切換開關在該不斷電模式時，該判斷控制單元判斷該外部電力供應單元是否有提供一外部電力，若為是時，控制提供該內部電力給該抽水泵浦，若為否時，控制提供該內部電力給該抽水泵浦，藉以在外來電力消失時能可進行水過濾動作，以有效延長水缸內水中生物的生命。
