E-commerce is very important to meet the needs of society in the digital era. In today's digital era, the marketplace has become a major need for everyone. So that it can be seen whether the Tokopedia application is good or not, and identify factors that are considered important by users. In this study, the technology acceptance model (TAM) method was used. The development of the questionnaire in this study began by identifying the variables to be studied, namely perceptions of use, ease of use, and usage attitudes. These variables were then developed with several indices based on the literature that had been compiled. The sample was determined by using Paul Leedy's theory with a population of 612 from the total UMP Informatics Engineering students who got 60 results as a sample of respondents and used 28 trial samples from 25% of the total actual sample. The value of determination or R square is 0.215. Thus the variable x to the variable y is 21.5%. Can Key from 60 respondents resulted in 13 respondents being satisfied with the quality of service from Tokopedia. The results of this research test prove that the use of the Tokopedia application makes it easy for consumers to make buying and selling transactions. Based on the overall results in this study, it is proven that the use of the e-commerce application of the Tokopedia application can guarantee that when using the Tokopedia marketplace, users can enjoy the convenience and quality of service in buying and selling transactions.