The purpose of this study is to analyze the political & economical factors that lead to crises, for determining the grounds of their occurrence in the financial markets and for analyzing the mechanisms of Islamic financial system that prevent the occurance of finance crisis. Based on the findings of the study, financial innovations such as extended publication of bonds without any security, have led to a systematic risk in the financial system of capitalism and will finally lead to its financial crisis.

Principles and foundations of Islamic financial system will prevent the occurrence of such crises. Islamic financial system is a stable and efficient alternative for the conventional financial system because of the prohibition of interest, Gharar, gambling, sanctions to achieve a void property and focus on profit loss sharing, mudharaba and transactionary contracts.

Theoretical results of this study in the last section have been tested through a questionnaire, by referring to the economic experts’ opinions and the accuracy of these results are approved.