One of the issues that can be considered in Shahnameh and other national epic works is morality. Bahman Nama of Hakim Iranshah Ebn Abi Al-Kheir is one of the most famous epics after Shahnameh, the story of the kingdom of Bahman and his revenge from the family of Rostam for the revenge of Esfandiar's blood, that full of ethical virtues and vices. However, in all religions, they have paid Ethical requirements and non-requirements. But since Bahman Nama is related to the advent of Zoroastrianism and the Lohrasb family is one of the Zoroastrian servants, it seems that the epic saying in the statement of the ethical points of the story has affected the ethical principles of Zoroastrianism more than Islamic ethics. This article tries to examine the Bahman Nama with this view through a descriptive-analytical method. God's prayer, forgiveness, fulfillment of the covenant and ... are a part of virtues and revenge, breach of covenant, oppression, lies and anger of ethical vices in this book, each with many examples in Bahman Nama.