In the 21st century, educational development and changes have become increasingly globalized, and teachers have been given an increasingly important role in the educational reform and development of countries around the world. The concept of teacher leadership and actions to develop teacher leadership have been recognized by more and more countries. Based on the urgent need for educational modernization, the new situation of integrated development and reform of urban and rural education, and the changes in the social environment brought about by new urbanization, the comprehensive two-child policy, and the reform of high school and college entrance examinations, China has put forward different and higher requirements for the construction of teachers. In 2018, the Central Committee of the Communist Party of China and the State Council jointly issued "Opinions on Comprehensively Deepening the Reform of Teacher Team Construction in the New Era" with Zhongfa No. 4. There have been new changes in the development of main policy concepts, emphasizing the transformation of teachers from passive policy implementation roles to the main body responsible for education quality. This article chooses junior high school teacher leadership as the research topic. Through interviews with junior high school teachers in Chaozhou City, Guangdong Province, China, it explores the development issues of school improvement in junior high school teacher leadership since China’s new round of basic education reform started in 2021.