Background and Aim: Internal evaluation is an important part of organization monitoring. One of the Ministry of Health's policies is to encourage educational departments to conduct internal evaluations. The aim of internal evaluation of department of speech therapy was appraising its education, research and treatment qualities and determining its strengths, weaknesses, opportunities and threats (SWOTs) to identify the ways of overcoming weakness and threats.Methods: This descriptive cross-sectional study was conducted in 10 phases to evaluate 10 factors. Participants were undergraduate, graduate, and postgraduate students, academic staff, director of the department along with the patients. The internal evaluation software for educational and research centers released by Center of Medical Education Studies and Development was modified and utilized. Data was analyzed by calculating mean of means.Results: Mean of means from highest to lowest scores were respectively as follows: the quality of diagnosis, treatment and dealing with patients 4.15 out of 5; as well as the quality of academic staff 3.5 were in the range of desirable category; qualities of management and organizational structure 3.34, graduate students 3.21, teaching and learning processes 3.1, missions and goals 3.09, instructional methods and curriculum models 2.99, educational and research equipments 2.9, students 2.76 and research 2.67 were within the range of rather desirable category. Total score was 3.17 (63.4%) which was within the range of rather desirable category.Conclusion: The department of speech therapy was in rather desirable state before merger. That result was appropriate according to the department's conditions and supplies.