This study aims to statement the role of religious dialogue in changing the religious conditions of hijazi community , during 12 th century AH , and highlighting its influence in change the methode of thinking of members , and statement how close they are . to achieve these goals , we collected legitimate information , then, we analyzed it , then , we compared it to religious conditions of hijazi community , let s come To conclusions : effectiveness of the contractual dilogue to correction of nodal deviation of members community , during 12 th century AH , in addition to evaluating the methode of thinking in individuals , as confirmed , he has contributed to unifying intellectual vision of members community , in the field of gods unity .

EFFECTS; RELIGIOUS, DIALOGUE, THE HUJAZ, ENVIRONMENT, 12 TH CENTURY AH.