Islamic finance is the only example of a financial system directly based on the ethical precepts of a major religion, providing not only investment guidelines but also a set of unique investment and financing products." Islamic finance is based on Shari'a, the Islamic law that provides guidelines for multiple aspects of Muslim life, including religion, politics, economics, banking, business and aspects of the legal system What Shari'ah compliant financing seeks to do is to shape financial practices and accompanying legal instruments that conform to Islamic law. Major financial principles of Shari'ah include a ban on interest, a ban on uncertainty, adherence to risk-sharing and profit-sharing, promotion of ethical investments that enhance society and do not violate practices banned in the Qur'an and tangible asset-backing.This Book tries to note the main Principal of Islamic finance. In addition to discuss the Improvement can be made in several areas to promote and enhance the providing Islamic financial services.