In recent years the development of online social networking has provided a new type of social interaction space, allowing users to immerse in new relationships, interacting through online platforms. This research studies the perceived interactivity and perceived value of social networking platforms and their connection to loyalty. The subjects of study are Facebook users, and the study is carried out using online questionnaire and surveys to help understand the connection between perceived interactivity and value and user loyalty through statistics methods such as Descriptive Statistical Analysis, Reliability and Validity Analysis, Exploratory Factor Analysis, Correlation Analysis and Regression Analysis. This research found that (1) perceived interaction can be categorized into three elements: Communication、Command and Control prove the scholars interactive definition; (2) the loyalty is more prominently related to the perceived value than the perceived interaction. From these discoveries it can be concluded that in order to induce loyalty, the platform has to generate value to its user first. At the same time, value is dependent on the perceived interaction; hence the three elements are closely knitted together.