In the study, first of all, the people who should be present in the official testament were examined. The capacity to issue a will was excluded from the scope of the study, and if the testator did’nt have one or more of the abilities such as seeing, speaking and hearing, or if he did’nt speak Turkish, the points that would be important in the preparation of the official will was examined. In the preparation of the official testament, the persons who could be officials and who could’nt participate as officials or witnesses were examined. There was no further investigation into who might be witnesses. The relatives of the official and witness, who participate in the preparation of the official will, will not be able to earn with that official will. This issue has been examined under the heading of persons who cannot be earned by official will. According to the TMK, the forms of formal testament are examined by opening a separate title for each stage. In addition, the ideas in the doctrine about the mixed will not regulated in the TMK and the application of the High Court of Appeal's were tried to be conveyed. The official who drafted the official will is obliged to keep and deposit the official will. Details regarding the proof strength, storage and delivery of the official testament have been excluded from the scope of the study. The reversal of the testament regulated between the articles 542-544 has been tried to be examined in the official testament. In the study, instead of avoidance of will, retrieval of will was used.