Objective: The aim of this study was to identify the effective factors involved in the scientific outputs of public librarians in Kermanshah Province.
Methodology: The research was applied in a survey method. The research population included 235 librarians of public libraries in Kermanshah province. The research sample was 146 librarian based on Cochran's formula. The data gathering tool was Ebegbulam and Jacintha (2016) questionnaire, which after validation was distributed among the research sample. Simple random sampling method was used. Descriptive statistical methods and inferential were used to analyze the data.
Findings: Findings showed that the research outoput among librarians was low. Responses in the motivational sector, have declared "the desire to promote themselves in the field of occupational activity" and "personal interest in research" as the most important motivational factors, respectively. In section of factors influence the increase in research, the " The desire to upgrade and progress" and "the desire to improve their performance in the workplace" are the most important factors. The barriers of doing research, the "lack of motivation for librarians to do research" and " Lack of fluency in foreign languages" were the most important obstacles. Also, "allocation of research funding to librarians" was the most effective way of increasing the scientific production of librarians.

Conclusion: Providing incentive programs for librarians to do research, preparing facilities for their education continuing and setting up research groups based on librarians, is proposed to plan for the development of scientific and research capabilities of the them.