The present invention provides a quick siphon toilet. The quick siphon toilet comprises a toilet body and a water tank, the toilet body is disposed with a spray waterway to wash the bottom portion of the toilet body and a flush waterway to wash the periphery wall of the toilet body, the bottom portion of the toilet body is disposed with a siphon washing-out pipe, the water tank is disposed with a drain valve, wherein the drain valve is disposed with a first drain outlet connected to the flush waterway and a second drain outlet connected to the spray waterway, the spray waterway is disconnected to the flush waterway. In a condition of same water volume, the present invention has longer siphon time and flushing time and better washing-out effect. And the present invention uses less water based on well flushing function, thus making it water-saving.