Automatic flush toilet

An automatic flush toilet, comprising:

• a toilet stool defining therein a toilet bowl;
• a water tank unit defining therein a water storage space;
• a first discharge member mounted to said water tank unit, and defining a first discharge port downstream of said water storage space;
• a second discharge member mounted to said water tank unit, and defining a second discharge port downstream of said water storage space;
• a pipe unit including
• a flow-out pipe disposed upstream of said toilet bowl,
• a first flow-in pipe disposed downstream of said first discharge port,
• a first connection pipe disposed downstream of said first flow-in pipe and upstream of said flow-out pipe, and
• a second flow-in pipe disposed downstream of said second discharge port and upstream of said flow-out pipe;
• a flush valve which is disposed upstream of said second flow-in pipe, and which is switchable between a closed position, where fluid communication between said second flow-in pipe and said water storage space is blocked, and an open position, where said second flow-in pipe and said water storage space are fluidly communicated with each other;
• a manual actuating unit which is coupled to said flush valve for actuating movement of said flush valve from the closed position to the open position;
• an electric switching valve which is connected in series between said first flow-in pipe and said first connection pipe, and which is switchable between a blocked state, where fluid communication between said first flow-in pipe and said first connection pipe is blocked, and a communicated state, where said first flow-in pipe and said first connection pipe are fluidly communicated with each other;
• and
• a sensor control unit disposed for controlling switching of said electric switching valve between the blocked state and the communicated state.