Introduction: Utilization of evidence- based practice raises validity and quality of nursing care and nurses responsibility regarding their practice.

  Furthermore awareness of barriers to updating of Knowledge is essential instrument for evidence-based practice. This study surveys these barriers from viewpoint of clinical nurses.

  Methods: This descriptive study was carried out on 313 nurses of three hospitals of Babol university of Medical sciences in 2011. The data collecting tools was a questionnaire including two sections. First section consists of demographic data and professional information of subjects, and the other one was Funks´ barriers scale including 31 items that were ranking according five points likert scale. All statistical analyses (Frequency, Percentage and Factor analysis) were performed with SPSS.

  Results: Factor analysis identified 4 dimensions that called Report, Research, Nurse, Organization. The first three important barriers were" There is insufficient time on the job to implement new ideas", Research reports/articles are not published fast enough”, and “Physicians will not cooperate with implementation”, each replaced in one dimension separately. Four barriers consist of the nurse is uncertain whether to believe the results of the research", the conclusions drawn from the research are not justified”, “The literature reports conflicting results” and "Research reports/articles are written in English" did not replace in any dimensions.

  Conclusion: The important finding of this study was that the subjects relatively identified barriers in all of dimensions. According to the first three barriers, managers not only should provide facilities for research findings utilization and allow implementation, but also should provide some educational facilities to create knowledge, Skill and positive attitude regarding research in nurses.