This research aims to determine the condition of Muslim family psychology and the difficulties that arise in the process of formation of children's religiality, and to find a pattern of formation of children's religiality in Muslim families. The author uses qualitative research with an ethnographic approach. Data collection is done by observation techniques, interviews, and documentation. Qualitative data analysis in this study is done simultaneously with the data collection process. The anlysis of data used in this research is the Analysis Interactive Model of Miles and Huberman. The steps in data analysis activities include data collection, data reduction, data presentation (display data), and conclusion or verification (conclutions). The results of this research are: (1) The psychological condition of the Muslim family (parents) that occur in the family is to experience psychic trauma and disappointment in a married (single parent), poverty condition; and distance to the location of a distant work with the family. (2) The difficulties that arise in the process of development of children's religiality include the lack of the togetherness of parents and children, the presence of environmental and peer associations, and the absence of a father as a role model in the family. (3) The pattern of formation of child religiality in a Muslim family that is commonly applied is: (1) Pattern of Coaching Democracy (2) pattern of authoritarian coaching (3) pattern of permissive coaching.