This descriptive-analytical study analyzed a number of Fadhil al-Samarrai’s works based on construction theory and explained the signs of the application this theory in his works. Fadhil al-Samarrai is a prominent contemporary grammarian and syntactician whose novel viewpoints on linguistics in general and on syntax in particular have made considerable contributions to Qur'anic studies. He has interpreted all linguistic and syntactic issues citing the noble ayahs of the Holy Qur'an and proved the nuances of Qur'anic expressions and the use of expressive capacity of Arabic language in the Qur'an. The authors believe that in his valuable works, Fadhil al-Samarrai has been influenced by Abdolghher Jorjani’s construction theory, and traces of this theory can be seen in most of his writings. Studies have shown that Samarrai, like Jorjani, has assigned a special role to syntax in rhetoric. Although he is influenced by the construction theory, he has offered numerous other perspectives regarding various issues, which shows his more meticulous attention to syntax. In addition to expanding more on a given topic, he has moved toward modern and advanced syntax and by means of simplifying syntactic issues or in other words, through “criticism of syntax”, he has put many complexities and rigid rules of syntax aside. Therefore, it can be claimed that he outstands Jorjani in this respect, performing syntactic identification of meaning even more comprehensively than what Jorjani did through exact, complete and all-inclusive explanation of syntactic issues and by provision of plenty of evidence.