The diaphragm provides the progression between certain structures and the chest cavity by means of an anatomic hiatus. The diaphragm is the second most functional muscle structure of the body after the heart. Diaphragm injuries may result from serious blunt or penetrating injuries. While most of the blunt diaphragm infuries are caused by traffic accidents and falls from heights, some may occur as a result of other blunt traumas to the lower chest or epigastrium. Diaphragm injuries may be seen in t 0.8-1.6% of the patients hospitalized due to blunt abdominal trauma. In this study, we will report that a diaphagm injury of a patient who has a history of blunt abdominal trauma was diagnosed six months after the trauma when he was admitted to hospital because of stomach ache and pain in his left chest.