One of the new methods in the interpretation of the holy Qur'an is structural interpretation that has recently been given special attention. The method of structural interpretation is based on the theory of purposefulness of the Quran's Surahs. In order to provide a structural interpretation of a Surah, two steps should be taken; first, according to the scientific rules, it is necessary to discover the structure and purpose of the Surah in an argumentative way, and then the content of the surah should be classified; in the second stage, considering the quality of the relation of the verses in the structure of Surah and the interpretive meaning of the verses, the context of the structural interpretation Surahs should be continuously presented. In this paper, firstly, the features of structural interpretation and then the rules for the discovery of structure and purpose of the Qur'anic Surahs are explained, and at the end, using structural method, Surah Al-Bayyina is interpreted according to the above two steps, so that the advantages and functions of the structural interpretation method and the content orientation of the Surah Al-Bayyina are made clear.