As one of the many linguistic phenomena of human beings, irony had greatly enriches the connotation of literary works and achieves many functions in descriptions. For example, in the article the Rocket once said that it's "lucky" that the king's son's wedding was held when the Rocket was off. The Rocket mistook the wedding as a foil to its setting off, misunderstanding the significance and practical value of its own existence. This shows that the rocket's self-confidence exceeds the degree of self-confidence, and its own value has been a great irony. In "The Great Rocket", this rocket was originally a kind of fireworks, celebrated the princess's wedding, but it had always felt that it was of extraordinary origin, vital, was determined to do big deals, so it behaved very arrogant in front of other fireworks.