|In accordance with the implementation of New Curriculum Guideline of 12-Years Basic Education Policy which focusing cross-field curriculum integration design, teaching and learning, school leaders are facing challenges relating to role-shifting from traditional administrative leadership to curriculum leaders and teaching and learning experts as well. However, A brief literature review on cross-field leadership inidicates that there is only few papers and researchs exploring the concept and actural practices of cross-field leadership. Facing these problems, this paper started with a brief analysis on core concept of key competency, curriculum structure and cross-field integration model of 12-Years Basic Education Curriculum Guidline. For the purpose of yielding some practical suggestions for school leaders to effectively implement cross-field curriculum, teaching and learning, this paper analyzed the core concept and dimensions of cross-border leadership and further compared this concept with thinking design model and cross-silo leadership. Finally, this paper proposes four core dimensions of cross-field leadership for school leaders, concerning actural behaviors of value/thinking pattern innovation, human resource rearrangement, procedure redesign, and structure reengineering.