Purpose: This study was done to verify the validity and reliability of a Psychiatric Nurses'' Image Scale (PSYNIS)for Korean psychiatric and mental health nurses. Methods: A methodological study design was used with an exploratoryfactor analysis, Pearson''s correlation, and a fitness of the modified mode for validity. Cronbach''s ? coefficientsand an alternative-form method for reliability were used. Psychiatric Nurses'' Image Scale (PSYNIS) wastested with 345 psychiatric and mental health nurses, residing in G city, J city, and J province. Data were collectedfrom Jun. 1 to Aug. 2, 2012. Responses were obtained from respondents through self reports method and eachitem had a possible score of 5. Collected data were analyzed using the SPSS 20.0 and LISREL 8.54 programs. Results: The 28 items making up the instrument were classified into the following 4 factors: ''Professionalism'',''Activism'', ''Coordination competence'', and ''Personalism''. These factors explained 63.2% of the total variance. Fitness of the modified mode was good (x2= 1052.30, RMSEA=.05, GFI=.90, AGFI=.86, NFI=.97, and CFI=.98). The reliability of the PSYNIS was .95 (Cronbach''s ?). Conclusion: Results of the present study suggest that thePSYNIS is useful for efficiently evaluation of the image of psychiatric nurses.