Fluency is the ability to speak or write a sentence easily and accurately, in which speaker should be able to express himself smoothly to be understood by any receiver. Fluency of context of the Arabic text depends on many standards to be accepted, these standards are related to the words, combination of words in the text or the grammar context of the sentence. In this study we propose a system to check the fluency of Arabic Scripts, the system is build using a particular set of standards which represents the factors for measuring the fluency of the text. We chose four types of standards exist in Arabic Language Grammars, these are the Brutal words, Disharmony of words letters, the repetition of words and the percentage of letters in the paragraph. The system shows a good performance in detecting the non-fluency words and it works fine for all of the scripts we used.