The basic treatment of thoracoabdominal gunshot injury is surgery. However, a conservative approach is increasingly becoming widespread in selected cases. In this study, the management of a patient with a spleen and diaphragm damage due to a gunshot injury who treated with delayed surgery was presented. A 37-year-old man was admitted with a gunshot injury and a computed tomography showed splenic and left diaphragmatic injury. His vital signs were stable and after a 3 days of conservative treatment, laparoscopic repair of the diaphragm was performed and the patient was discharged uneventfully. When a diaphragmatic injury is accompanied by splenic injury in the case of the patient is stable and there is no need for emergency surgery, the repair of the diaphragm may be delayed to prevent unnecessary splenectomy