There is no doubt about the presence of ethics in society. Imam Khomeini, who founded and managed the Islamic Republic of Iran, was a pious politician and an authority in many fields including ethics. He believes all Islamic ethical rules are political. So the present paper will try to systematically explain Imam Khomeini’s contributions to political ethics based on a descriptive-analytical approach. It seems that Imam Khomeini’s political ethics is based on brotherhood. For studying, stabilizing, and expanding brotherhood, the society should be ornamented with virtues and cleaned from roguery. He believes that all human beings have two types of inborn nature; an original nature which loves absolute perfection, and an dependent nature which hates imperfection. Brotherhood relationship is strengthened through being ornamented with virtues in line with human’s original nature. It helps society to become like a single body and act in line with Allah not in line with the self. In this way, society will turn into a utopia associated with God. Thus, on the basis of such ethical system which is innately political, the paper is to present a solution for personal, familial, political, economic, and social problems at a national, local, and global level.