In order to explore the current situation of subjective well-being of college students and themechanism between interpersonal relationships and subjective well-being, this study introduces the
variable of self-worth to explore the mediating role of self-worth in interpersonal relationships and
subjective well-being. The comprehensive interpersonal relationship diagnostic scale, the young students’
self-worth scale, and the subjective well-being scale were used to test and collect data for 604 college
students, SPSS 24.0 was used for descriptive statistics, and Amos 26.0 was used for structural equation
modeling. The results showed that: (1) the subjective well-being of college students was at a moderate
level (M±SD=3.73±0.60) and positive emotions (F=5.15; p<0.05) and negative affectivity (F=4.38; There
were significant gender differences in p<0.05), which were reflected in the fact that both positive and
negative emotions of girls were significantly higher than those of boys; (2) College students’ interpersonal
relationships, self-worth and subjective well-being all showed significant positive predictive effects
(β=1.10, 2.01; p<0.001), self-worth had a significant positive predictive effect on subjective well-being
(β=1.32; p<0.001); (3) The bias-corrected percentile method was used to test the mediating effect, and
after adding the mediating variable of self-worth, the direct predictive effect of interpersonal relationships
on subjective well-being was significantly (β=1.44; p<0.001), 95% confidence interval [1.13, 1.77],
excluding 0, and indirect effects accounted for 70.00% of the total effect, indicating that self-worth
played a partial mediating role between interpersonal relationships and subjective well-being in college
students. In short, on the one hand, it can directly improve the subjective happiness of college students
by guiding individuals to establish good interpersonal relationships with peer groups, and on the other
hand, it can also indirectly improve the subjective well-being of individuals by helping students shape a
clearer and firmer sense of self-worth. This study reveals the influencing factors of happiness, identifies
the psychological mechanism of interpersonal relationships affecting subjective well-being, provides
empirical support for the theory of happiness, and provides practical enlightenment for interventions to
improve the subjective well-being of college students.