Human trafficking is a crime regarded as inconsistent with human dignity and rights. Effective combating against it includes preservative strategies of trafficking, protection of victims and prosecution of criminals. Supporting victims of human trafficking is done according to humanitarian intentions and values of human rights since the victims are rather injured by the crime than committed it. Therefore, this support can lead to their cooperation with the justice system in order to assist enforcement of law and avoid risk of revictimization. In this regard, the transnational documents such as protocol to prevent, suppress and punish trafficking in persons, especially women and children (Palermo Protocol), and also Council of Europe convention on action against trafficking in human beings (Warsaw Convention) have anticipated the least supportive measures to support physical, psychological and social recovery of the victims in addition to help them return to their families and society. Some of the most important measures are: not to punish victims for what they have committed in the process of human trafficking, providing suitable accommodation or shelter, material assistance, residence permit, medical and psychological services, job training and rehabilitation programs, access to information, counseling and legal aids as well as facilitating participation of the victims in proceedings, translation services and so on. The European convention is advantageous over Palermo Protocol because it provided more supportive measures including recovery period and accessibility to working markets. Based on the existing deficiencies of law to combat against human trafficking, this paper suggests that Iranian criminal policies welcome initiative strategies to protect victims of human trafficking and also try to enact any law to undertake minimum measures to protect them.