The invention discloses a child car seat. A head rest is pivotally connected with the backrest through a rotating shaft, and the head rest can rotate forward and backward about the rotating shaft. Thechild car seat also includes a head rest resetting protection device which plays a damping and/or limiting role on the rearward movement of the head rest main body when the head rest is rotated backward and resettled. By pivotally connecting the head rest to the backrest, when the impact occurs, the head rest is always protected on the outer periphery of the head and neck of the child, and a headrest resetting protection device is added. In the process of head rebound after the impact, the head rest resetting protection device is forced to compress and absorb the head energy, which can effectively counteract the impact force on the head and neck of the child, prevent the neck injury of the child, and greatly improve the safety of the child in the car.