Based on Perception Theory and technology acceptance model, it is assumed that five factors are to be taken into consideration as for undergraduates’using“Eleme”online ordering behavior, namely: perceived practicability, perceived ease of use, perceived preference, perceived popularity and perceived risks, with the degree of user satisfaction a yardstick to measure “Eleme” online ordering behavior. On this basis, the factor analysis, correlation analysis and regression analysis have thus been carried out of perceived factors and the degree of user satisfaction. The results show that the perception factors of using behavior mainly include such factors as perceptual practicability, perceived preference, perceived risks and perceived popularity. Meanwhile, perceived practicability, perceived preference and perceived popularity have a significant positive influence on the degree of user satisfaction, with perceived risks, however, exerting a significantly negative effect on the degree of user satisfaction.