Introduction: The Content analysis is used to identification, analysis, record printed and nonprinted resources. This research was aimed to content analysis of accomplished research designs in KUMS. We studied other purposes such as characteristics, subjects trend, and research trend based on MeSH.

Methods: This is a descriptive and content analysis research. The universe study is 369 research designs that accomplished in KUMS of 23 March 1991 to 19 March 2008. Data collected by information forms. Recording unit is concept keywords in title, abstract and keywords. Use alphanumeric expressions for coding. Determinate Alphanumeric expressions with consideration the position of entry term in tree structure. The data analyzed by SPSS software. 

Results: We found that, researches are in main category «Diseases» (23.3%), «Chemicals and Drugs» (21.4%), and «Analytical, Diagnostic and Therapeutic Techniques and Equipment» (16.8%). The Main category «Diseases» had the most of share between education (22.8%), jobs (23.3%), groups' education (23.3%), sex (23.3%) and work place (23.1%).

Conclusion: Generally, researches are focused on Diseases related subjects, Diagnostic and Therapeutic Techniques. Therefore, recommend acquire viewpoints about these subjects.