To provide a safety belt preventing the abdomen from being pressed so that children do not resist being seated on child seats.

A child seat S has a base part 1 and a seat part 2 separably attached to the base part 1, the seat part 2 having a seating part 20 and a back part 30 reclineable relative to the seating part 20. A crotch belt 4 fixed in place at one end is attached to the seating part 20 and a safety belt is formed by connecting a shoulder belt thereto. The crotch belt 4 has a support part 41 secured to a bottom, a first link part 43 rotatably disposed at the support part 41, and a second link part 45 rotatably disposed at the first link part 43. The first link part 43 is formed with a stopper part 43a regulated by the abutting surface 41a of the support part 41 and the second link part 45 is formed with a stopper part 45a regulated by the abutting surface 43b of the first link part 43.