Turkey neighbouring country of Syria has begun receiving intense immigration since Syria Civil War which started in the beginning March of 2011. Syrian population in Turkey which approaches four million has brought problems such as integration, social harmony, socialization, and othering. Turkey has been working to ensure that Syrian refugees who migrated as a result of forced immigration are in harmony with Turkish society via all religious and social institutions and organizations. In this study which includes religious adjustment, socialization, religious socialization and integration, there are titles such as religious life of refugees, perspective of religious understanding of Turkish Muslims, approaches to the problem of religious education or contact with religious groups. In addition to this, Syrian refugees’ feeling of marginalization that they have experienced is one of the dimensions of this study. The aim of this study is to integrate and establish a degree of social harmony of Syrian refugees settled in Istanbul as a result of forced migration. In this study where, qualitative method is used to achieve reliable and good results, snowball sampling or chain sampling technique is preferred. The reason for this is to gain the trust of the participants and to reach the correct answers as much as possible. In the first theorical part of the study, social adaptation, socialization and socialization phenomena of religion were mentioned, but interview data were analysed in the second part. In the last section, the result of the study was evaluated.