社交媒体倦怠指个体在使用社交媒体过程中由于过载而产生的避免使用社交媒体的倾向。虽然社交媒体的用户仍在增多，但同时也有越来越多的用户反映自己使用社交媒体的频率有所下降，甚至对社交媒体产生了倦怠，这引起了许多研究者的关注。已有的社交媒体的研究存在着一定的不足：首先，在对社交媒体倦怠的定义方面，研究结论尚不统一；第二，在对社交媒体倦怠的结构认识与测量上，缺乏充足的研究来探索和验证社交媒体倦怠的内涵与结构，同时也缺乏准确有效的测量工具；第三，在社交媒体倦怠的影响因素探究方面，存在研究结果与研究假设、理论不一致的情况；第四，上行社会比较由于会影响个体的自尊，在社交媒体的相关研究中备受关注，然而在社交媒体倦怠的影响因素和作用机制的探究中，鲜有研究探究社会比较、社交媒体倦怠和自尊之间的关系。针对这些不足，本研究编制了《社交媒体倦怠量表》，来探索和验证社交媒体倦怠的结构，并以此为测量工具，在“压力源-负担-结果”框架下将上行社会比较与社交媒体效能、社交媒体有用性和隐私担忧一同作为“压力源”，将社交媒体倦怠和比较后的负向体验作为“负担”，将社交媒体使用频率下降和自尊水平作为“结果”，构建社交媒体倦怠的“压力源-负担-结果”框架，探究社交媒体倦怠的影响因素与作用机制。研究包括三个子研究，结果表明: (1) 在社交媒体倦怠的结构探索与验证方面，研究编制了《社交媒体倦怠》量表，最终的量表包括15个题目，由三个维度组成，分别对应社交媒体倦怠个体的认知、行为和情感表现，每个维度分别包括5个题目。量表具有较高的信效度，总量表的α信度系数为0.87，子维度的α信度系数分别为0.68(认知)、0.79(行为)、0.77(情感)。量表总分与效标得分之间存在显著的相关，且判别分析的准确率高达85.07%，验证性因素分析结果也表示量表与三因子结构拟合较好，说明量表具有良好的效标关联效度与结构效度。 (2) 在社交媒体倦怠的影响因素方面，社交媒体效能、社交媒体有用性、隐私担忧和上行比较均对个体的社交媒体倦怠水平产生影响。其中，社交媒体效能、社交媒体有用性对社交媒体倦怠有直接的负向影响，隐私担忧对社交媒体倦怠有直接的正向影响；上行比较虽然对社交媒体倦怠无直接影响，但可以使个体在上行比较后产生负向体验，从而提高社交媒体倦怠水平。 (3) 在社交媒体倦怠的作用机制方面，社交媒体倦怠在社交媒体的使用行为上和心理健康水平上均会对个体产生影响。具体表现为：在社交媒体使用方面，社交媒体倦怠会降低社交媒体的使用频率；在心理健康方面，社交媒体倦怠会降低个体的自尊水平。比较后的负向体验虽然对社交媒体使用频率和自尊无直接影响，但可通过提高社交媒体倦怠来增加使用频率下降程度、降低个体的自尊水平。

Social media fatigue (SMF) refers to a fact that social media users have tendencies to withdraw from social media usage because of feeling overwhelmed by social media. Although the number of social media users has increased a lot, there’s still a great many people reporting that their frequency of social media usage has decreased, which has attracted several researchers’ attention. There are some deficiencies lying in the existing researches of social media fatigue: Firstly, the definition of social media fatigue are not unified yet; secondly, the structure of social media fatigue needs to be explored further; thirdly, the inconsistency between research hypotheses and results still exists in some researches; finally, because of lowering people’s self-esteem, upward social comparison has attracted many researchers’ attention, but there’re few researches exploring the relationships between upward social comparison, social media fatigue and self-esteem. According to the deficiencies above, the present study coined a social media fatigue scale to explore and confirm the structure of social media fatigue. Then using the scale as a measurement, the present study explored the effects that upward social comparison together with other internal factors of users has on social media fatigue, and explored the impact that social media fatigue has on self-esteem. Based on the Stressor-Strain-Outcome Model, the present study included three sub-studies and the results were as followings: (1) As for exploring and confirming the structure of social media fatigue, the present study coined a social media fatigue scale. The final version of the scale consisted of 15 items, which was made up of 3 dimensions. The name of these dimensions are Cognitive Aspects, Behavioral Aspects and Emotional Aspects, and each dimension included 5 items. The final version of the scale presented good reliability with α=0.87 for the whole scale, and αcog=0.68, αbehav=0.79, αemo=0.77 for each dimension respectively. The scale had good criterion-related validity, and the overall correctly predicted percentage of the scale was 85.07%, implying a satisfactory precision of the scale for screening and diagnosis. The results of confirmatory factor analysis showed that the data fitted the three-factor structure well. (2) As for exploring the effect factors of social media fatigue, the present study showed that social media efficacy, social media helpfulness, privacy concern and upward social comparison effected social media fatigue significantly. Social media efficacy and social media helpfulness had negative effects on social media fatigue, whereas privacy concern had positive effects on social media fatigue. Although upward social comparison had no straight effect on social media, it effected negative experiences after comparison negatively, and then increased the level of social media fatigue indirectly. (3) As for exploring the influences of social media fatigue, the present study showed that not only could social media fatigue influence social media users’ behavior, it influenced their mental states as well. In terms of social media usage, social media fatigue reduced the frequency of social media usage; in terms of mental states, social media fatigue lowered users’ level of self-esteem. Although the negative experiences after comparison had no effect on self-esteem straightly, it could increase users’ level of social media fatigue and then reduced both the frequency of social media usage and users’ level of self-esteem indirectly.