Introduction: In Scientometrics evaluations, the main criteria for determining the rank of a country is the rate of participation in generating science, technology and innovation, i.e. total participation in the process of developing global science. This research applies Scientometric methods to study the growth rate and trend of medical fields' scientific productions in Iran during 1978-2007.

Methods: This is a descriptive-survey research includes the English articles in medical fields indexed in SCIE database during 1978-2007. These articles matched with NLM classification. To gather these information, we used advanced search web of science database with limited time for 6 periodic five time years.

Results: We found 1901 records from SCIE, from 29 medical fields of SCIE, the most pharmacology and biochemistry fields, lowest in nursing and geriatrics. Fifty three per cent were without citation in SCIE. The Tehran University of Medical Sciences considered most active in 19 medical fields. The least number of articles found in 1983-1987 and 1988-1992 the most number in 2003-2007. 

Conclusion: Lack of citations in most of Iranian articles in SCIE, might because of publication in low impact factor journals, or deported of developing countries from valid international journals. One of the relevant factors in decline in second and third periods could be the Iran and Iraq war in 1981.Including of universities names with the different name has caused to exclude Iranians’ universities names in world rankings. We concluded that production in medical sciences is increasing intensively its continuance trend depends on interaction between Iranian and foreign researchers, increase in educational budgets, collaboration with universities in the world.