Abstract: With the continuous promotion of quality education, people pay more and more attention to the mental health of college students, and subjective well-being (SWB) is an essential part of it. Besides, altruistic behavior, social support, and self-esteem are vital elements among the numerous factors affecting SWB. Additionally, the scene of altruistic behavior is divided into real space and cyberspace. Therefore, this study discusses the impact of realistic altruistic behavior and network altruistic behavior on SWB, and then further discusses the cross-effect of network behavior and real behavior. In this study, 1064 college students were investigated by using realistic altruistic behavior scale, Internet altruistic behavior scale, realistic social support scale, Internet social support scale, self-esteem scale, and SWB. Moreover, SPSS 24.0 and AMOS 24.0 were applied to analyze the data. The results are shown as below. (1) The total scores of altruistic level, real social support, network social support, self-esteem, and SWB of college students are all at the upper-moderate level, while the total score of the network altruistic level of college students is at the lower-moderate level. Furthermore, on the gender dimension, the subjective well-being of males is significantly higher than that of females. In terms of grade, the subjective well-being of sophomores is significantly lower than that of freshmen and juniors. For the major of liberal arts and sciences, the subjective well-being of science and engineering students is significantly higher than that of liberal arts students. (2) Besides, there is a chain mediation effect between actual altruistic behavior and subjective well-being. That is, actual altruism affects actual social support, then affects self-esteem, and then affects SWB. The chain mediation effect accounts for 26.22% of the mediation effect. (3) Moreover, the results of network altruism are similar to that of actual altruism. The chain mediation effect between network altruistic behavior and subjective well-being shows that network altruism affects actual social support, then affects self-esteem, and then affects SWB. The chain mediation effect accounts for 21.48% of the mediation effect. (4)Additionally, there is a cross effect between realistic altruistic behavior and network altruistic behavior on real social support and network social support. The realistic altruistic behavior can affect the network social support, then affect the self-esteem, and then affect the SWB. Besides, the network altruistic behavior can also affect the real social support, then affect the self-esteem, and then affect the SWB. The present results reveal the influence of reality and network environment on the SWB of college students. Most of the previous studies focused on the effect of altruistic behavior on SWB in real or online environments, however, few researchers paid attention to the effect of altruistic behavior. In addition, With the development of network technology, the Internet has become an important platform for teenagers to acquire knowledge, exchange ideas, and entertain themselves. Under the influence of the network environment, it is necessary to discuss the influence of online and offline behaviors on the development of teenagers. Finally, as a cross-sectional study, it is impossible to explore the impact of altruistic behavior on SWB of college students. Therefore, it is a future trend to improve this influence by using longitudinal studies.

Key words: Realistic altruism、Network altruism、Realistic social support、Online social support、Self-esteem、Subjective well-being、College student

摘要： 为探讨现实利他行为与网络利他行为对主观幸福感的影响，并着力考察现实社会支持、网络社会支持与自尊在其中所起的作用，以1064名在读大学生为被试进行问卷调查，研究结果显示：（1）现实利他行为和网络利他行为均能在一定程度上预测主观幸福感。（2）现实、网络社会支持和自尊是现实和网络利他行为对主观幸福感产生影响的两条并行中介路径。（3）现实和网络利他行为与现实和网络社会支持之间存在交互作用。

关键词: 现实利他行为、网络利他行为、现实社会支持、网络社会支持、主观幸福感、大学生