Abstract The building of Central Mosque of Azghad goes back to Sh?hrukh M?rz?. The wooden and stone decorations of this mosque joined with its paintings are the focus of this paper. We intend to introduce this mosque and its architectural decorations and also study the possible functions of this building. Through the analysis of its inscriptions and pictorial patterns on wood, stone and wall we would put forward the supposition that Ahle Fatian, who were one of the powerful minority groups in Sari’s society in 9th ….. , were effective in the decorations and patterns of this mosque. Ahle Fateian could impose their own ideological approach and preferences on the decoration of this mosque. There seems to be a relation between curved doors that have especial patterns and meanings with inscriptions made on the columns. We have analyzed the inscriptions from historical, social, religious perspective. Studying the possible functions of the building revealed that the mosque’s original function was mosque. There are wooden decorations with carvings of pictorial elements and carved inscriptions on the entrance door and columns, stone decorations on the basis of columns. Pictures and numbers used in the decorations like flower leaves, sun, bergamot, sevastika and cedar are symbolic elements that were readable at their own times. Such elements are most probably related to Fata’s minority groups. Also, we have found some fatah’s phrases and expressions on the columns’ inscriptions just in front of the altar. Besides, carved pictures of columns in the mosque, the variations of the forms and basis of the columns add to the beauty of this building. In this research, the mosque studied using qualitative, historical and analytical methods and we tried to analyze the pictures to understand the hidden meaning of the pictures and inscriptions. All pictures are taken by the researcher.