The current research aims at: Students know the level of the fourth phase of the Arabic language departments in colleges of education in the discovery of the basic error of grammar by answering the following questions: 1. What level of students in the fourth stage of the Arabic language departments in colleges of education in the discovery of the basic grammar error? 2. Is there a statistically significant difference between male and female students in the discovery of the wrong grammar? 3. What proposals to address the weakness of students in the grammar error detection from the viewpoint of the teaching staff and Altdriciat? Determined by the current search by: 1. Students in the fourth stage of the Arabic language departments in colleges of education infrastructure. 2. Faculty and Altdriciat as a substance. 3. AD 2010-2011 academic year. In the light of the findings of current research researcher concluded the following: 1 - a weakness in the level of students in the fourth stage of the Arabic language departments in the faculties of basic education in the subject as, in particular the (expressed) by about draws attention, and then, this weakness threatens the attainment of language and grammar for generations to come who receive Arab and sciences at the hands of these students; because they will graduate and become university teachers in the future. 2 - about a lack of exercise in grammar, exercises in the area of set texts about teaching in a special way. 3 - the inability of students to discover the grammar error in the text. 4 - not to link the material grammatical rules of other branches of the Arabic language. 5 - weak capacity of students to analyze the Arabic sentence in accordance with rules and a specific scientific basis. 6 - The teaching stresses in the education as to save the rule and Astzaarha, and this is seen as on the grounds that too and not a means to learn the Arabic language and literature through the maintenance of tongue and pen, and that the expression can not be achieved by studying the theory but also through ongoing training. 7 - The teaching of grammar is not through the understanding and comprehension, but conservation-based automation, which is the method used in teaching as evidence that the transfer of students to higher stages of learning are often not accompanied by progress in their level.