Background: Nursing literature indicates that patient teaching is a critical component of nursing roles, and health teaching is of the basic rights of the patients. Nursing students facing challenges and constraints while providing patient health teaching that requires study and judgments. Aim: The aim of the study was to identify the barriers of patient health teaching among nursing students in Faculty of Nursing in Tanta University. Material and method: descriptive design was used. the study was conducted in Faculty of Nursing at Tanta University, Patient teaching barriers questionnaires was used for data collection, The sample consists of 448 undergraduate nursing students in second, third and fourth academic year in the above mentioned setting and willing to participate in the study. Results: high percent (71.9%,68.1%,65.8%,64.1& 60.7%) respectively of nursing students agreed that over load of clinical duties, inability to assesses patient’s learning needs, insufficient references and opportunity to practice teaching skills as well as inability to choose appropriate methods of teaching are students themselves barriers that face them before patients health teaching. High mean were given to all items of patients health teaching barriers before ,during and after patient teaching ranged from 71.05±17.42 to 78.43±14.01 among nursing students of 3rd year followed by nursing students of 4th year ranged from 62.36±16.53 to76.39±13.41 and nursing students of 2nd year ranged from 68.82±12.60 to 75.01±15.66. Conclusion: Nursing students faced several barriers before,during and after patients health teaching namely: regarding students themselves, patients’ barriers, environmental and rules &policies barriers as well as evaluation barriers. Recommendation: nursing students have intense needs for training and learning about patient health teaching barriers and how to overcome these barriers.