External fixation is a surgical treatment used to set bone fractures in which a cast would not allow proper alignment of the fracture. The aim of study was to explore and develop the established standards of nursing care for patients undergoing external fixation . Subjects and Method : descriptive exploratory was utilized, the study was carried out at trauma unit at assiut university hospital . The study sample divided into all health care provider; 60 nurses, and 10 physicians for the opionnaire sheet. Tools utilized for data collection were health team opionnaire sheet, nurses knowledge standards level test sheet and nurses performance observation standards check list sheet. Results founded that more than two thirds of nurses had good level of knowledge as regarding external fixation patient. The majority of nurses and physicians had agreed as regarding to oppionnaire sheet Nurses founded that about more than half of nurses done steps performance about standards of care of patients undergoing external fixation. conclusion formulation of standards is the first step toward evaluation nursing care delivery. Recommendation : in service training program for nurses is important in trauma unit application of the nursing care study for patients undergoing external fixation.