FLUSH TOILET

A flush toilet bowl capable of efficiently performing toilet bowl cleaning is provided. The flush toilet bowl includes : a toilet bowl portion (11); a toilet drainage channel (12); a toilet bowl main body that includes: a first water discharge port (13) that is open on the upper periphery of the toilet bowl portion (11) and that discharges cleaning water that forms a swirling flow swirling inside the toilet bowl portion (11) in the planar view; and a second water discharge port (12) that is open on the upper periphery of the toilet bowl portion (11) and discharges cleaning water that is joined, on the downstream side of the cleaning water discharged from the first water discharge port (13) and flowing on the surface of the toilet bowl portion (11), by the cleaning water discharged from the first water discharge port (13) and forms a downward flow toward the toilet drainage channel (12); and a toilet bowl cleaning device (20) that supplies cleaning water to the first water discharge port (13) and the second water discharge port (14), wherein by the time the cleaning water discharged from the first water discharge port (13) flows on the surface of the toilet bowl portion (11) and reaches a merging point (Z) where the cleaning water discharged from the first water discharge port (13) joins the cleaning water discharged from the second water discharge port (14) that forms the downward flow, the cleaning water discharged from the second water discharge port (14) has been increased to a set flow rate.