The discourse on mental health is often an interesting and beneficial discussion across time. There are many developing concepts adopted from western thoughts. The concept offered by Islamic Psychology has not been explored yet. One of them is the concept of mental health from the perspective of Abu Zaid al-Balkhi. This study aims to analyze the concept of Islamic mental health, specifically the thought of Abu Zaid al-Balkhi in the book Maṣāliḥu al-Abdān wa al-Anfus. By using a type of qualitative research with a descriptive-analytical method specifically in describing and analyzing mental health concepts, according to Abu Zaid al-Balkhi. Based on this research, it can be seen that mental health or a healthy soul is the stability of the sou...