The holy Quran has used the term "healing" for three issues and healing means the health, treatment, and recovery. The present study aims to examine some verses in the Quran and also some related narrations regarding the healing of diseases. : The resources used by the researchers in this study have been the major interpretations of Shiite and Sunnite and some narrative sources including "Behaar Al-Anwaar". : some scholars have made no comments on the healing effects of the Quran on physical illnesses and some have said that such healing effects work only when human medical treatments have been exhausted without any result. The other group has noted that the healing powers of the Quran are in fact the rules that it has set regarding the prohibition of some foods and drinks and its healthcare recommendations. Finally some others have put the idea that the healing powers of the Quran are in effect some sorts of prayers; this fourth group believes that there are different kinds of prayers for different purposes, and, though most of the prayers are clearly supplications to God, some sorts of prayers are used for healing of the sick by writing them on a piece of paper and making the sick people carry them, by reading them to the sick, and by writing them on a plate and then washing them off and making the sick drink that water. : The positive effects of the Quran on physical, mental and psychological health are indications of paying more attention to the mental aspects.