Mental health is the most important aspect that humans must have, not a few among people who are physically fit but suffer from mental illness. This study analyzed the concept of mental health from the Daradjat perspective in developing adolescent character and the influence of religion on mental health in developing adolescent character. To achieve the objectives of this study, a study of literature related to the research theme was used, therefore the source of this research was Daradjat's works, both directly related to mental health and other fields, the data obtained from these sources were analyzed using a semiotic approach. Based on the results of the study, it is known that the mental health resources offered by Daradjat are those from religion, if humans practice their religion properly and correctly, they will have a healthy mentality. Adolescents as individuals often experience mental illness which results in damaged character, adolescent character can be fostered with a religious approach, mentality and character have an inseparable relationship with one another.