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The Influence of Various I’rab Evaluations to Tafseer Quran has been interpreted by different techniques since the period of Prophet Mohammad. Arabic language constitutes the base of these techniques. For this reason it is said that those who work on glossary science must learn this language in a god level. Irab science which is a sub-branch of Arabic language and deals with the place of words in sentences is important for a correct interpretation. From the point of the Quran, another issue which makes this science important is that words may have different possible aspects of irabs. In Arabic, the common use of a sign for showing a few elements may affect the place of the word, this may accordingly affect the meaning of the sentence. This situation is possible for verses of Quran. Namely, being have a different irab aspect of a word of verse is one of the factors that affect the meaning. Interpreters make their decision according to their language and culture background by evaluating these possibilities.