The 12-year basic education curriculum will be implemented in 2019 academic year. The new curriculum guidelines take the key competencies as the backbone of the coherence and integration of basic education courses, and thereby guide the development of curriculum and teaching in various fields. Because textbooks have a great influence on classroom teaching, it is highly concerned whether the textbooks can follow the idea of competence-based instruction. In order to explore the editor’s conceptions for textbook design, the researchers interviewed the four editors of life curriculum textbook. Through interviews, it was found that the editor’s conceptions have the following main changes: 1. from the instruction of knowledge to the initiation of active learning; 2. from the presentation of content and results to the design of the learning process; 3. from the concatenation of content to the layout of “beginning with the end in mind”. When textbook editors have a better understanding of competence-based teaching, the textbooks will also have an opportunity for innovation.