The invention provides a child seat with splashing prevention and one-ring unlocking functions and relates to the field of child safety seats. According to the technical scheme, spring dampers are additionally arranged in a base, a backrest, a headrest and the like of the child safety seat, so that buffering and energy absorption during collision are facilitated, and the effect that injuries, caused by collision, to a child body are reduced is achieved. Meanwhile, a FIX unlocking assembly, pedals, a safety belt assembly and the like of the seat are optimized, and the practicability is provided; and a splashing prevention assembly is additionally arranged, and thus injuries, caused by splashing objects, to the child during collision are avoided.