The basic objective of this study is to design the model of effectiveness of electronic advertisement on consumer buying behavior. The research population is customers and consumers of large food stores in Shiraz that used a store's website. The sample of this study is as big as 400 people. Cluster random sampling method based on visible traits in the population with the highest estimated number of customers with a cautionary view was carried out. To evaluate the reliability of the questionnaire in this study, Cronbach's alpha was used. Cronbach's alpha was estimated 92%for the whole questionnaires and fluctuated between76%and 98% for its subscales. In order to analyze the data of questionnaires and to test the hypotheses, factor analysis and structural equation modeling techniques were used. The results show that by rejecting the first hypothesis and confirming the rest of assumptions and other relationships between the independent, mediator and dependent variables, the whole model is generally acceptable. This means that content and communication stimuli would get to the behavioral reaction phase after the process of influencing.