This study aimed to identify methods for detecting common grammatical and spelling errors committed by students of Arabic at the Faculty of Education, Bahri University. It also aimed to attract students' attention to common grammatical and spelling errors that may be found in their writings during their study. The problem of the study was to answer the questions: What are the ways to detect written grammatical and spelling errors committed by students in exams? And how can a proposed program be designed to detect students' grammatical and spelling errors? What is the effect of the proposed program in addressing students' grammatical and spelling errors? The researcher used the experimental approach to test the validity of the hypotheses and the descriptive approach to answer the questions and obtain information and data. The results showed that the arithmetic mean related to detecting grammatical errors for the control group in the post test was 17.6, and that the arithmetic mean for the experimental group in the post test was 17.6, and the value of (t) was 14.0 and the alpha value was 0.000. The results also showed that there were statistically significant differences at the significance level of 0.05 in detecting grammatical errors between the control group and the experimental group. Moreover, the arithmetic mean for detecting spelling errors for the control group for the post test was 37.21, and the arithmetic mean for the experimental group for the post test was 76.142. It was also found that the t-value was 24.