The present invention relates to a baby seat for a vehicle including a receiving space. The baby seat for a vehicle including a receiving space relating to an embodiment of the present invention comprises: a base (100) combined with a seat of a vehicle; a seat part (200) connected to the upper surface of the base (100) and combined to be able to rotate; a seat back (300) rotating by a predetermined angle with respect to the seat part (200); and a containing tray (400) arranged at a predetermined position on the rear surface of the seat back (300) and capable of receiving a first object, wherein the containing tray (400) includes a rear surface cover (410) capable of being attached to and detached from the rear surface of the seat back (300) and an exclusive tray (420) combined with the rear surface cover (410) to support the reception of the first object.
