Fairy tales are the most important genre of children's literature because they can bring joy and enlightenment to children. Fairy tales were usually based on fictional stories about magical characters and their stories. These characters could be real historical figures, mythical figures, or fictional characters, but they all had one thing in common: their stories could arouse children's interest and curiosity. Fairy tales were usually filled with imagination and creativity, allowing children to feel infinite possibilities and possibilities. Through fairy tales, children can learn how to explore and discover new things, how to ask questions and find answers, and how to cultivate their creativity and imagination. Fairy tales also often involve emotions and values. Through telling profound stories, children learn how to express their emotions, understand the emotions of others, and respect different opinions and values. Finally, fairy tales usually had very vivid language and images that children could easily understand and remember. These characteristics made fairy tales a very popular literary form for children. Therefore, fairy tales play a very important role in children's literature. They can bring children a lot of joy and enlightenment to help them grow and develop.