Flush toilet

A flush toilet for discharging waste with flush water, the flush toilet comprising:

• a toilet main body including a bowl configured to receive waste, a rim formed at a top edge of the bowl, and a discharge trap configured to discharge the waste in the bowl;
• and
• a tank device configured to supply the flush water to the toilet main body, the tank device being provided behind the toilet main body, wherein
• the tank device includes
• a storage tank main body provided behind the toilet main body and above a floor surface,
• a water supply unit configured to supply the flush water supplied from a water supply source to the storage tank main body,
• a pump provided on a downstream side of the storage tank main body, the pump being configured to feed the flush water from the storage tank main body to the toilet main body under pressure, and
• a suction pipe including an upstream-end opening provided in the storage tank main body, the suction pipe being configured to allow suction of the flush water in the storage tank main body from the upstream-end opening to a pump side by operation of a drive unit of the pump,
• wherein the water supply unit is configured to supply water to the storage tank main body while the pump is being driven,
• the storage tank main body includes a large tank section on a large-capacity side and a small tank section on a small-capacity side, the large tank section including a lowest bottom surface of the storage tank main body, and
• the storage tank main body includes a water supply port on an upper surface of the storage tank main body, the water supply unit being configured to supply the flush water to the storage tank main body through the water supply port, and the water supply port of the storage tank main body and the upstream-end opening of the suction pipe are both provided on a large tank section side.