An Islamic window is a separate branch, department or subsidiary of a bank operating under the principles of Islamic finance under traditional banks. The Islamic branch mainly operates in conditions where there is no legal basis for the activity of an Islamic bank, subject to any commercial bank within the framework of certain laws. We have analyzed about 25 articles on Islamic windows in this study. In the analysis, we mainly conducted a scientific research on the statistical analysis between the Islamic bank, the Islamic window and the traditional bank, their achievements, shortcomings and the quality of service and gave the necessary suggestions.