This study aimed at exploring the practices of principals' positive leadership in primary and secondary schools in Taiwan, where it used semi-structured interviews to invite a total of 13 subjects including primary and secondary school principals as well as candidate principals in the research. Indicated from the findings and conclusions, the practices of principals' positive leadership are to: 1. Establish high quality positive goals which prioritize convergent consensus, build vision and determine target for revision at rolling basis; 2. Shape warm and positive atmosphere which normalizes positive thinking, public praise, proactive encouragement, and emphasis on morality working like a team; 3. Build a relationship with care and support which empathizes others with care, praise others in a timely manner, satisfy the needs, give full support and enhance profession, honor and responsibility; 4. Build a culture of trust and communication which gives mutual trust and good communication, praises merits, good relationship, and builds brand with high-level expectation; 5. Present perseverance in educational practices which sets strategy of constant innovation and unifies resources to solve problems.