This study applies cloud computing combining the theory of learning hierarchy to the digital learning assessment and remedial instruction, and explores the learning effectiveness on the learning model of self-learning in Chinese idioms. In this study, 60 students in grades three to six of an Elementary School in Nantou County of Taiwan participated in the research experiments. The results of this study reveal that the learning on Chinese idioms through the cloud-based E-learning assessment and remedial tutoring system is superior to the traditional reading to learn. The learning achievements of the students learning Chinese idioms by the proposed system are significantly improved. Therefore, the cloud-based E-learning teaching materials, methods of assessment, and remedial instruction are worth to develop and research.