Although the Andalusian writers were influenced by the oriental methods and their artistic methods, there were characteristics characteristic of their prose, especially the apostles. Their letters were built in an artistic form, which differs in some parts from the oriental letters, which often begin with Basmalah and Tahmid and prayer over the Holy Prophet. Known openness and begin to pray to the addressee, and maximize it, or the system, or to enter the subject directly. And the variety of methods of construction variety of topics, but the book -the book of Beni Al-Ahmar- keen to quote from the Koran and the Hadith, and more than the use of propaganda and objectionable, and exaggerated in the presentation of graphic images, and interested in the use of deceptive enhancements, and raised the style of expression even to appear some of their messages as poetry Dissolved. This thesis is based on the technical analytical approach, because it will present literary messages and analyze them and then study them technically, so this approach is the most appropriate for this study. It is worth mentioning that I divided this research into three chapters, as follows: The first chapter: contains the concept of the diwaniya messages, their importance, their topics, and then the technical construction and the associated characteristics such as artistic images, and improvements to the deceptive Chapter II: In this chapter, it dealt with the concept of religious messages and their importance and themes, and then the technical construction and the consequent characteristic characteristics such as quotation, and martyrdom, and the virtuous improvements. Chapter III: The concept of the Brotherhood messages and their importance and themes, and then the technical construction and the consequent characteristic characteristics such as imagination, and the inclusion of poetic, and the virtuous improvements. Conclusion: I will summarize the most important conclusions I have reached through my correspondence in these messages The book concluded that the book of Bani al-Ahmar took a single literary pattern, in which they committed themselves to writing all their messages, from Hamdallah, to the subject, to the conclusion, and then to the completion of peace. The book is based in this era on the Arab-Islamic heritage, , Arabic poetry and proverbs The characterization of the elongation in these messages clearly, and the preponderance of the messages with verbal and fictional refinements, were predominant in many subjects, as evidenced by the ability of the scientific writers and their ability to know them The study highlighted the artistic prose in literary letters and its most important features in one of its stages of development, the period from the eighth century to the beginning of the eleventh century AH.