Children's science stories, children's science fairy tales, and science fantasy novels are all common types of children's literature, but they have some differences in content, form, and theme. Children's science stories usually used science as the theme to tell the stories of scientists or scientific phenomena, and through specific examples and cases to show children the practical application of scientific knowledge. These stories are often interesting and practical, helping children understand and master scientific knowledge. Children's science fairy tales used fairy tales as the theme to integrate scientific elements into the story to make the story more lively and interesting. In children's science fairy tales, science was no longer a cold concept, but was integrated with emotion and imagination, allowing children to feel the collision between science and humanity in the story. Science fantasy novels used fantasy as the theme to integrate scientific elements into the fictional world. In science fiction novels, science was no longer a cold concept. Instead, it incorporated elements such as emotion, magic, and future technology, allowing children to experience the infinite imagination and the charm of future technology in the story. Although children's science stories, children's science fairy tales, and science fantasy novels are different in theme and form, they all aim to stimulate children's interest and curiosity in science and cultivate their scientific thinking and imagination.