To provide a cabinet-attached toilet having depth size for ensuring a front setting dimension for a user to make a smooth action of standing up/ seating without bringing the body of a user into contact with the front wall surface in a toilet booth and without changing posture of the user on the way.

In a seat type toilet, a front setting dimension from the wall surface of a toilet booth back is set to be at most 700 mm. The seat type toilet having a human body washing device 62 widely expands an opening 86 of a backward upper wall 84 to a forward position from a hinge 74 so that functional component sets 90 can be put in a toilet inside space 88. In that case, the functional component sets 90 are arranged in spaces on both right and left sides by avoiding a trap pipe 82, and it is positioned forward of the hinge 74.