The present paper aims to analyze the method of Sibooye in Syntactic analysis with reference to grammar writing and applied syntax. The outcome of this study shows that the method of Sibooye is structure writing mixed with analysis. He didn’t suffice to quoting what he heard but moves forward and does Functionalism analysis. The nearest reasons showing Sibooye’s attempt on this method is that most of the expressions he uses in the titles of sections are descriptive which show both the E’rab (اعراب) form and Ta’lil (تعلیل) together in the same place. This study which has been done with descriptive-analytical method also shows that Sibooye didn’t ignore the applied aspect of Arabic but paid strong attention to semantic and applied uses and applications and with careful analyses, indicates the semantic differences of the uses and words of different tribes and also explains the place of uttering the speech Hence, what known today as Functionalism has already been presented for Sibooye.