To empirically investigate the effects of external motive factors and internal motive factors of university students who purchase sport merchandise by using internet shopping malls upon their purchasing intention, this study selected 280 students out of the university student group as a sample and performed a statistical analysis with it. Of the data collected, 14 copies of questionnaire answers with insufficient entries and little reliance were excluded, and 262 copies of questionnaire answers were used in the analysis of the results of this study. After the data collected were coded, this study yielded the following conclusion through frequency analysis, factor analysis, reliability analysis and multiple regression analysis. First, the external factor showed no statistically significant difference in the factor of product extroversion purchase intension. Second, the external factor showed statistically significant difference in the factor of product practice regarding product, price, and facilitation stimulation. Third, the attitude factor out of internal behavior factors showed statistically significant difference in the factor of product extroversion purchase intension. Fourth, the attitude and subjective discipline factor out of internal behavior factors showed statistically significant difference in the factor of product practice purchase intension.