To provide a baby bath which can catch the arm appropriately even if the position on which a user puts the arm varies.

The baby bath is provided with a bathtub 1 and a mat 2 which is elastic and transformable so that it can wind along the upper rim 1a of the bathtub 1 and is attached with plural suction cups 5 in the rear face. The mat 2 is arranged in a position on which a user puts the arm and is fixed to the bathtub 1 using the suction cups 5. Plural swell members 3 are provided on the surface of the mat 2 and plural hollow cylindrical poles 4 are provided on the rear face corresponding to the swell members 3.