In this paper, seven dimensional variables of marketing mode development and product quality improvement are selected under the 5G network security theory. In order to clarify the relationship between the two, the questionnaire was used to obtain the quantitative values of the seven dimensional variables, and then the Pearson correlation analysis was used to test whether the dimensional variables could be used in the regression analysis. After passing the test, multiple linear regression is used to interpret the relationship between the development of agricultural e-commerce marketing mode and product quality improvement. The regression equation of strengthening brand awareness on product quality is B1=0.511+0.439*B4+0.653*B5+ 0.327*B6+0.297*B7, which demonstrates the relationship between product quality enhancement and strengthening brand awareness in the development of agricultural products e-commerce marketing model in a more intuitive way. This study makes people have a more new cognition of the role relationship between the two, which is of great significance for practicing the goal of synergistic development of the two.
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