This research aims to recognize any factors that might affect the customer loyalty on Tokopedia with its related variables such as service user interface, service information quality, perceived security, e-commerce service feedback, perceived privacy, perceived risk, perception of website quality, e-customer satisfaction, and e-customer trust. The process of collecting data uses a questionnaire with a purposive sampling method and 385 respondents are Tokopedia users. The data analysis technique used in this research is SEM-PLS (Partial Least Square). The result of this research mentions that variables of e-commerce service user interface, perceived privacy, perceived risk, perception of website quality influence the variables of e-commerce satisfaction and e-commerce trust while e-commerce service information quality variable only has a positive influence on e-commerce satisfaction variable. On the other hand, e-commerce satisfaction does not have a positive influence on e-commerce customer loyalty while e-commerce trust positively influences e-customer loyalty.