Reiki is a healing tehnique that is based on an energy which heals and is believed to transfer from one person to another by laying hands. This energy has a healing efect on the body, mind and emotion. Reiki originated in Japan in the early twentieth century, and spread around the world in the 1970s and 1980s thanks to the New Age. In this thesis, important elements of Reiki are presented, namely initiation into Reiki, degrees in Reiki, Reiki symbols, syncretistic aspects of Reiki and Reiki treatment. Initiation is an unavoidable element of Reiki, without it an individual cannot practice Reiki. The Reiki technique consists of three degrees and by initiating into higher degree, it provides additional knowledge of the symbols that enhance Reiki treatments. The types of treatments offered in Reiki are touch treatment and distance treatment where the person being treated does not need to be present. An important aspect of Reiki is its syncretism, which is presented in this thesis through two world views: biomedicine and Christianity. Reiki and biomedicine are connected thanks to the New Age and the implementation of Reiki in the field of complementary and alternative medicine. The relationship between Reiki and Christianity, although seemingly two incompatible elements, is presented in this paper through the practice of Reiki therapists where by modifying both elements they form one self-meaning unity and these two element sserve as a complement to each other.