This study entitled” Studying the environmental obstacles and offering (an) appropriate model(s) for applying e-commerce in Iran” seeks to offer (a) model(s) for prioritizing the environmental obstacles and determining the percentage importance of each one. It has been organized into five chapters. The population includes 100 native and non-native persons who have been involved in e-commerce and applied it. The study has used field and library methods and the data have been gathered through survey, case study, comparison (comparative study) and electronic survey. They have been analyzed by parametric and non-parametric methods. In addition, they have been processed and categorized through statistical tests in order to accept or reject the hypotheses. The conclusion includes models, which prioritize the environmental obstacles and show effect size of each one.