This study aimed to analyze the teacher's role in developing the character of Islamic Junior High School students and analyze the supporting and inhibiting factors in developing the character of Islamic Junior High School students. This research uses field research with qualitative research type. Using methodological (phenomenological) and scientific (psychology, sociology, and religious) approach. Sources of data come from primary and secondary data. Methods of collecting data through interviews, observation, and documentation. And the data management and analysis techniques are data reduction, data presentation, and verification and conclusion. The results showed that the character development of Islamic Junior High School students is carried out through the head of the madrasa and the teacher. The role of the madrasah principal focuses on the control function, supervisory function, and management function. In contrast, the role of the teacher focuses on the role that is applicative, namely the inspiration, communicator, facilitator, executor, evaluator, and religious approach.