The study adopts ethnography, takes the actual field study, employs participant observation, in-depth interview and written documents as the main information collection methods, and goes through the numbering process of grounded theories to interpret the is-ought behaviors and dilemma of the educational professional leadership of a elementary school principal. The study presents the conclusions made by the principal from the re-examination of his leadership career, including: 1. The educational professional leadership of the principal is a concept of leadership co-existed with dynamic balance and diversity; 2. The principals is the promoter of curriculum and instruction reforms; 3. The school learning culture is an essential element to facilitate the professional growth of teachers; 4. Teachers are the kinetic actionists in implementing school cultural learning; 5. The non-professional leadership behaviors of the principal occupy a majority of time at the scene of education; and 6. The educational professional leadership of the principal becomes the long-term belief, value and culture of the organization.