This research is an intrinsic case study and adopts the approach of in-depth interviews to investigate a principal's leading experience about how to develop school-based curriculum sustainability. The research findings include: 1) The observation of school's inside and outside ecological situations cause principal's reflection; 2) The principal tries to lead the community to cross over the school border to build the connection; 3) The principal tries to empower teachers so that they can build their own learning abilities; 4) The implementation of curriculum focus on the linking of meanings and deep learning; 5) The principal tries to build an integrated feedback network with the other schools nearby. The conclusion is that the principal, based on the moral purpose, tried to link the school and community energy and develop the school based curriculum. Moreover by the distributed leadership and deep learning, the principal deepened the professional community's actions in practice. Finally, the principal constructed professional practice community and connected other schools to set up the feedback evaluation system, and then support the developments of curricula to sustain improvement. At the end of the text, the researcher shared her reflection and provided some suggestions of the research Hope the research can be the further reference for the fields of school based curriculum development and principal leadership.