I have experienced with 6 cases traumatic injury of diaphragm from May 1991 to October 1993 at the Youngdong Hospital in Tonghae. This cases included 4 penetrating injuries and 2 nonpenetrating injuries. Associated injuries occurred 4 cases and 2 cases occurred stomach herniation. All cases, operative treatment were done. Result of this treatment cases were good. Complications included 1 early death and only 1 wound infection. Cause of death was related to associated injury.