CHILD SAFETY SEAT

A child safety seat includes a seat portion and a backrest portion connected with each other, a headrest slidably connected with the backrest portion, a first and a second side support connected with the backrest portion and respectively protruding forward from the backrest portion at two sides thereof, the first and second side supports being configured to be movable relative to the backrest portion for modifying a transversal distance between the first side support and the second side support, and a linking mechanism adapted to movably link each of the first and second side supports to the headrest so that the headrest and the first and second side supports are movable concurrently relative to the backrest portion for adjustment.