"Throughout the ages, children's literature has been an educational tool in both feudal and capitalist societies", which is fundamentally correct. Children's literature, including the famous Andersen's fairy tales and Grimm's fairy tales, not only teaches us truth, goodness, beauty, falsehood and ugliness, but also teaches us how to be a man, which fundamentally enables us to know the society, enrich our spiritual world, enlighten our thinking and make our life more peaceful. Especially Andersen's fairy tales, are suitable for people of all ages to read. It is essentially right to say that children's literature is an educational tool.