The utility model discloses a mobile emergency pump station which is connected with the prior pump station system through a flexible pipe and a quick connector. The mobile emergency pump station comprises a diesel engine, a coupling, a plunger pump, a display dial, a control valve block, a movable wheel, a control valve block machine frame, a plunger pump support frame, a diesel engine machine frame and an underframe and is characterized in that the movable wheel is arranged on the outer surface of the underframe; the control valve block machine frame, the plunger pump support frame and the diesel engine machine frame are respectively arranged inside the underframe; the control valve block is arranged on the control valve block machine frame; the plunger pump is arranged on the plunger pump support frame; the diesel engine is arranged on the diesel engine machine frame and connected with the plunger pump through the coupling; the plunger pump is connected with the control valve block; the display dial is arranged on the diesel engine; and a pressure gauge is arranged on the display dial and connected with the control valve block. The utility model can carry out emergency operation under the situation that a hydraulic opening and closing machine headstock gear losses a conventional power supply and a diesel engine emergency power supply to realize flood regulation operation at a hub.