Flushing toilet device

The utility model provides a flushing toilet device which has the advantages of favorable design, and easy operation of disassembly and assembly of a toilet seat unit on a toilet body. The flushing toilet device comprises a slot part (2) with an upper opening, a mounting hole (3) of a toilet seat unit, a closet body (5) which is arranged at the rear part of the slot part (2) and provided with a repair hole (4) of which the upper part is open, and cleaning device (6) arranged at the upper part of the repair hole (4), wherein a toilet seat unit (12) can be disassembled and assembled freely by the mounting hole (3) through a mounting piece (10). The mounting hole (3) of the toilet seat unit is formed in the mode that the mounting hole (3) is not communicated with the inner surface of the slot part (2), but communicated with the repair bore (4), so that the operation of the disassembly and the assembly of the toilet seat unit (12) on the toilet body (5) from the repair hole (4) can be carried out in the state that the cleaning device (6) is disassembled from the closet body (5).