A questionnaire survey was conducted among college students to explore the relationship
between social network use intensity, online positive feedback, online identity experiment, self-concept
clarity, and sense of meaning in life. The results showed that: (1) The intensity of use of social networks
negatively predicted self-concept clarity through network identity experiment and positively predicted
self-concept clarity through online positive feedback. (2) Self-concept clarity was significantly positively
correlated with having the sense of life meaning, but significantly negatively correlated with seeking the
sense of life meaning. (3) The results of mediating effect analysis showed that the intensity of mobile social
network use could predict the sense of meaning in life through the independent mediating effect of selfconcept
clarity and online positive feedback, and the chain mediating effect of “online positive feedback to
self-concept clarity” and “network identity experiment to self-concept clarity”.