Background: Closed pelvic fracture or simple fracture is a break to the bone that does not damage the surrounding tissue and does not produce a break in the skin Aim of the study: This study aimed to evaluate nurses' Knowledge and Practice for Patients Undergoing Surgeries for Closed Pelvis Fracture. Research design: Descriptive research design was used. Sample: The fifty nurses who are working in trauma unit at Assiut University Hospital. Two tools used for data collection. Tool (1) Nurses knowledge assessment questionnaire included two parts. Part (1): Nurses' demographic characteristics. Part (2): Nurses' knowledge assessment questionnaire regarding care of pelvis fracture. Tool (2): Nurses 'practice observation checklist. Results: There was unsatisfied level of nurses' knowledge and practice about closed pelvis fracture with percentage (84%, 100%, respectively) and there are some items are not applicable (measure abdominal girth). Conclusions: The majority of studied nurses were had unsatisfied level of knowledge about closed pelvis fracture and their level of practice was inadequate. Recommendation, more research studies are needed to focus on more training and education for nurses toward management of fracture pelvis to maintain good health and prevent complications.