Of the conventional P-A and A-P chest films which have been studied, many roentgenologic signs suggested forchest trauma, In the present study, an effort was designated to further clarify the X-ray findings of thenonpnentrating extracardiac chest injuries and to observe the X-ray findings being a leading maneuver of surgicalprocedure. Fat embolism and shock lung must be kept in mind on follow up films. The results thus obtained aresummarized as follows; 1. Most of cases are visualized betwen the age of 10 and 50 and more common in male. 2.Those denoting rib fracture, hemopneumothorax, and lung contusion are direct roentgenologic signs. 3. In case ofserious result which showed pulmonary edema patten on conventional chest films, we thought fat embolism or shocklung to be the cause of death.