It is widely accepted that drugs are one of the most important components of health care, and their prompt access has become one of the most important goals of health care systems around the world, as well as one of the main concerns of governments. The purpose of this study was to Investigating and Explaining Factors Affecting on Iranian Pharmaceutical Distribution Industry Using Fuzzy Delphi Technique. This research is applied in terms of purpose and descriptive-survey in terms of implementation method. The statistical population of the study is made up of 35 experts in Iran's Pharmaceutical distribution industry who were selected by snowball sampling. First, with a deep review of the research literature and based on the content analysis, 41 factors affecting the pharmaceutical distribution industry were identified. To screen and ensure the importance of the identified factors and select the final factors through the design of a Researcher-made questionnaire and the fuzzy Delphi method was used in two stages. Kendall’s coefficient of concordance was used to calculate the agreement of the experts. According to the nature of this research, fuzzy Delphi method and Excel and SPSS software were used to analyze the collected data. Based on the obtained results, the members of the Expert Panel found a total of 49 factors effective on the pharmaceutical distribution industry, of which 41 factors have been mentioned in previous researches and studies, and 8 other factors have been introduced by the panel members Manuscript profile