The study aimed to identify the relationship between Coronavirus anxiety (COVID-19) and mental health among twelfth grade students in Al wusta covernorate in the Sultanate of Oman. The sample consisted of (297) male and female students. The researcher used the descriptive approach and two scales: the anxiety scale of (COVID-19), and the health scale. The results showed a high rate of infection with the emerging coronavirus in the study sample appeared. The results revealed that mental health can be predicted by fear of the Coronavirus anxiety. The results also showed that there were no statistically significant differences in the sex variable in the overall scale of fear of the Coronavirus anxiety, while there were statistically significant differences in favor of males in mental health in the sex variable on the scale as a whole. The study made a number of recommendations, including the necessity of providing support, the psychological, moral, social and health benefits of students, adherence to health guidelines issued by health institutions, and the need for educational institutions to work on the continuity of promoting the level of mental health among school students.