The purpose of this research is to analyze the content, current situation, and development of recent research on principals’ knowledge leadership in Taiwan. To achieve this purpose, this research uses content analysis. The conclusions of this research are as follows: (1) The number of studies increased from 2006 to 2012, related to the need for academic research in Taiwan. (2) Most researchers selected elementary schools as subjects, while few researchers selected senior/vocational high schools, colleges, or universities. (3) Most researchers adopted questionnaire surveys as research methods, but lack diversity of methods. (4) The majority of studies aim to inquire about the relationships among principals’ knowledge leadership, and different variables, and to describe the current situation. (5) The main difficulties are, "professional knowledge and ability can be strengthened," and, "the lack of a learning and sharing atmosphere." (6) The most important and effective strategy of principals’ knowledge leadership is, "the principal who acts as an example for learning and sharing knowledge." Based on the conclusions, this research puts forth a number of suggestions with regard to principals’ knowledge leadership.