The perspective of this research is descriptive-qualitative with phenomenology design. Data were collected through interviews, observation and documentation. While the data analysis using grounded theory developed through several procedures, namely: Open coding, Axial coding, and Selective coding. The results of this research are: The role of Boarding School Amanatul Ummah in building the character of the young generation who study in the institution are as follows: Contributing to improve the character and attitude of the young generation by instilling religious values, responsibility value, and self-reliance value in accordance with the vision, mission, and objectives that have been set; Build, guide, and instill the values of character in the younger generation so that they are able to live the practice according to the teachings of religion; Build, guide, and instill the values of character in the younger generation so that they are able to be disciplined and responsible; Building, guiding, and instilling character values in the younger generation so that they are sensitive to the needs of society; And Build, guide, and inculcate the values of character in the young generation to contribute to the economic empowerment of the community. For students who perform will get reward breaking will be punishment, and Factors underlying Boarding School Amanatul Ummah in building character of young generation is to save mental frustration of young generation from bad influence of environment. Where the bad influence of the environment has attacked the younger generation from all directions