The purposes of this study, through the researcher¡¦s action research, explore the topics including the concept of the principal¡¦s curriculum leadership, the correlative factors that affect the principal¡¦s curriculum leadership, and how to advance curriculum leadership in nine-year coherence curriculum. The research methods are interview, secondarily document analysis, and participant observation to investigate and analyze the problems and the solution of the problems on curriculum leadership of the junior high school principal. Be based on the results, the conclusions of the study are as follows : ¢¹. The concept of the junior high school principal 1. The ideas of the principal¡¦s student-based curriculum leadership affect the courses of school curriculum development. 2. Unite the principal¡¦s curriculum leadership with the activities on teachers¡¦ professional growth. 3. Adopt expedient leadership to promote the effect in the principal¡¦s curriculum leadership ¢º. The factors that affect the researcher¡¦s curriculum leadership According to the situation at our school, the principal¡¦s curriculum leadership is affected by some factors, for example, the principal, teachers, the organization, the chief of the education administration agency, and community ; however the factors show various influential degree. ¢». How does the researcher advance curriculum leadership in nine-year coherence curriculum 1. The researcher¡¦s curriculum leadership has four stages ¡V organization, design, implementation, and feedback to develop school-based curriculum. 2. School vision should be formed by the democratized mechanism, and fused into curriculum design. 3. Hold teaching demonstration to promote teachers¡¦ teaching effectiveness to be beneficial to develop the principal¡¦s curriculum leadership. 4. Investigating and developing the objective curriculum evaluation system is the theme that requires efforts in our school principal¡¦s curriculum leadership. 5. Associating community resources to establish the connection of coexistence and mutual benefit between community and the school is the problem that has to be faced fearlessly to principal¡¦s curriculum leadership. Finally according to the conclusion, the study takes one step ahead to propose some suggestions separatly focusing on the general junior high school principal, the education administation organizations, and the latter researches in the future.