This study compared the National Curriculum and analyzed the reflection of the four core competencies in the secondary school Chinese textbooks, and then checked the hierarchy and connectivity of the curriculum and the textbooks. As a result of the study, it is confirmed that some of the problems raised were improved. But despite these efforts, some of the contents seem to need improvement in response to situations that can be revised at any time. The boundary between the 2015 revised National Chinese Curriculum’s content system and achievement standards is ambiguous. For this reason, the hierarchy between the 2015 Chinese textbook of middle school and high school seems to be somewhat lacking. The 2015 Chinese textbook for secondary schools reduced the amount of learning to reduce learning burden. However, the composition of the textbooks is complicated and confronts the problem of learning the same contents repeatedly in middle school and high school Chinese class. If we can set different order of core competency in middle school Chinese textbooks and high school Chinese textbooks, we will be able to secure hierarchy and link between the curriculum and the textbook.