A diaper for a insert-type toilet bowl includes an excretion hole 74 formed at the diaper main body 67 corresponding to a defecated fecal receiving portion 14 in the insert-type toilet howl 9 comprising the defecated fecal receiving portion 14 and the hip receiving portion 13, and in the diaper for insert-type toilet bowl 66 used by setting inside the insert type toilet bowl 9, the toilet seat receiving sheet 78 for configuring the plug-in hole 79 of the hip receiving portion 13 is laid on at the outer surface of said diaper main body 67, the depth of the plug-in hole 79 is configured in such a manner that when the hip receiving portion 13 is inserted, the defecated fecal receiving portion 14 and the excretion hole 74 get together； and the toilet seat receiving sheet 78 has hygroscopic and waterproof properties and dimensions by which al least the defecated fecal receiving portion 14 can be wrapped up from the downside of the insert-type toilet howl 9.
