A bidet for infants and children includes a main body that is shaped as a chair, has an inner surface and an outer surface and comprises a backrest part with a predetermined length, a cradling part forming a predetermined angle with the backrest part, and a buttock-cradling part between the backrest part and the cradling part and connecting the backrest part and the cradling part and concavely recessed in the inner surface of the main body, a plurality of hang protrusions formed at an outer surface of the backrest part and arranged with predetermined intervals for fixing the main body at different angles, and a supporting member having a predetermined length and formed at a bottom surface of the buttock-cradling part, and a discharge port is formed lengthwise through a center portion of the buttock-cradling part concavely recessed in the inner surface of the main body.