This book is designed for elementary school students above the fourth grade who have zero basis in programming. The book is divided into three parts: basic skills, thinking training, and innovative applications. Young readers can learn and practice step by step according to the context of each chapter to gradually master and become proficient in Scratch programming. While learning this book, young readers’ self-learning ability, computational thinking, innovative creativity and programming ability can be effectively trained and improved, so that they can lay a solid foundation for further study of professional computer knowledge and technology in the future.