In the rapidly changing global organizational environment of today's world, the theory of transcendent leadership has been highly inspiring. Although it has emerged for over a decade, there is currently no related scale available for academic use. Especially in recent years, junior high school principals have faced changing educational environments both within and outside the school, requiring them to possess transcendent leadership thinking and actions. Constructing the scale of transcendent leadership for junior high school principals would be beneficial for the academic research and development of principal leadership studies. Based on this premise, the present study constructs the scale of transcendent leadership by exploring junior high school principals' role positioning and actual practices in school leadership, drawing from the theory of transcendent leadership. The scale has revised through 5 expert reviews and used in a formal questionnaire survey with Taiwanese junior high school teachers as the research participants. A total of 1,580 valid questionnaires were collected. The results of this study establish a questionnaire consisting of 36 items for the junior high school principals' transcendent leadership scale, which can be categorized into four major dimensions and 12 sub-dimensions: 1. "Leadership of Self": character manifestation, self-awareness and regulation, self-spiritual growth. 2. "Leadership of Others ": service orientation, motivating care, fostering spiritual growth. 3. "Leadership of Organization": shared school governance, shaping organizational vision and culture, transcending limitations. 4. "Leadership of Community": establishing community network relations, managing social responsibility, inclusive development.