CHILD SAFETY SEAT HAVING A HEADREST

A child safety seat includes a seat portion, and a backrest assembly configured to connect with the seat portion. The backrest assembly includes a backrest portion and a headrest portion, the headrest portion including a headrest mounting part adapted to connect with the backrest portion so that the headrest portion is held with the backrest portion via the headrest mounting part, and a head support that is adapted to provide support for a child's head and is installable on and removable from the headrest mounting part.