Head nurse evaluation of the nurses' performance of chest care procedures is vital to quality patient care at ICU. While nurses' self-evaluation help nurses to pay attention to their own performance, raise their self-awareness and efficacy to make efforts for improvement in performing of six chest care procedures. So head nurses and nurses actually need an educational training program for enforcing them for continuous performance improvement and updating knowledge .Objective: study head nurses' evaluation and nurses' self -evaluation of performing chest nursing care procedures. Setting: Tanta University Hospitals at Mobark ,Chest , and Tanta University International Educational Hospital. Tools two tools used Tool I: Evaluation and self -evaluation for nurses' actual performance of chest nursing care procedures observation checklists. And tool II: Knowledge assessment of chest nursing care procedures steps, evaluation and self -evaluation process. Result Preprogram researcher head nurses evaluation and nurses self -evaluation showed that nurses performance were at unsatisfactory level for all items of the six chest care procedures. Head nurses 55%,95%,100% and 85% showed poor level for plan ,needed information ,principles of evaluation and methods ,respectively . All head nurses evaluation and nurses self- evaluation level of knowledge pre- program was poor . Actually no one of nurses showed excellent level preprogram for performing items of vibration, coughing and suctioning procedures which changed post program to 65%, 78.8% and 100% , and at 3 month post program changed to 65%, 83.3% and 100% respectively . All head nurses and 80% of nurses had poor overall knowledge about six chest care procedure standard evaluation and self- evaluation principles preprogram .Implementation of educational program improved head nurses and nurses overall knowledge about chest care, evaluation and nurses self -evaluation statistically significant at P <0.01.Conclusion: Head nurses at Tanta university hospital were not evaluating nurses performance of chest care procedures leading to unsatisfactory nurses performance .Actually head nurses have insufficient knowledge to evaluate nurses performance and nurses have insufficient knowledge to perform chest care procedures according standard and cannot make self-evaluation for their performance. Implementation of educational program about evaluation principles,chest care procedure standard and self- evaluation principles successfully improved nurses staff performance and knowledge. Recommendation: Conduct regular training programs workshops and seminars for head nurses to update their knowledge and skills related to evaluation of nurses performance. Conduct periodical in service training program for nurses to refresh their knowledge and skills related to chest care procedure performance according to standard of its performance. Head nurses should encourage nurse self-evaluate their performance and provide supportive health work environment to help nurses improved their performance of chest care procedures