The utility model discloses a child dining chair, and particularly relates to the field of child dining chairs, the child dining chair comprises a chair body, one side of a seat surface of the chair body is fixedly connected with a fixed armrest, a top transverse plate of the fixed armrest is rotatably connected with a horizontal table plate, and a vertical plate of the fixed armrest abuts against the horizontal table plate; the end, away from the fixed armrest, of the horizontal table plate is rotationally connected with a vertical rotating plate, the bottom of the vertical rotating plate abuts against the seat face of the chair body, the bottom of the vertical rotating plate is in threaded connection with a hand-screwing bolt, the chair body is provided with a notch matched with the hand-screwing bolt, and the horizontal table plate is connected with a plurality of containing plates in an inserted mode; and each placing plate is provided with a placing hole, so that the child dining chair reduces the difficulty of feeding young children.