隨著網際網路的普及化,現代人生活早已和社群媒體(Social Media)形成密不可分的關係。本研究旨在探討歸屬感在社群媒體和現實生活中,對社會資本有何影響?並針對不同的社群網路使用者經驗與背景,探討其是否有顯著差異性。本研究的研究對象為年滿18歲的社群媒體(Facebook、Instagram)使用者,並運用網路問卷發放的方式蒐集資料,共計完成388份的有效問卷,透過統計軟體SPSS 24與 Amos 24分析資料,以路徑分析(Path Analysis)探討本研究之假設的因果關係,從研究結果中得到以下結論:第一、歸屬感不論對於線上社會資本或者線下社會資本皆有顯著影響。第二、男性使用者與女性使用者對於線上歸屬感、線上結合型社會資本與線上橋接型社會資本較的感受有顯著差異。第三、使用11年以上Facebook的使用者與6年以上Instagram的使用者對於線下歸屬感、線下結合型社會資本與線下橋接型社會資本的看法皆明顯高於使用年資5年以下的使用者。第四、平均一日使用社群媒體在61分鐘以上的使用者對於線上歸屬感、線上橋接型社會資本的看法明顯高於30分鐘以下的使用者。依據本研究結果,將對於日後研究者在社群媒體、社會資本及歸屬感之相關研究上提供參考依據。;With the popularization of the Internet, modern life has long been attached to social media. This research aims to explore how the sense of belonging affects social capital in social media and real life? According to the experience and background of different social network users, we would explore whether there are significant differences. The subjects of this study are social media (Facebook, Instagram) users who are over 18 years of age. This study collected data using online questionnaires. A total of 388 valid questionnaires were completed and analyzed through statistical software SPSS 24 and Amos 24. Using the path analysis to explore the causality of the hypotheses of this study, the following conclusions are drawn from the research results. First, belonging has a significant impact on both online social capital and offline social capital. Second, male users and female users have significant differences in their online belonging, online bonding social capital, and online bridging social capital. Third, users who have used Facebook for more than 11 years and users who have used Instagram for more than 6 years have a significantly higher perception of importance on offline belonging, offline bonding social capital, and offline bridging social capital than those with less than 5 years of users. Fourth, users who use social media for more than 61 minutes a day have a significantly higher perception of the importance of online belonging and online bridging social capital than users who use social media for less than 30 minutes. Based on the results of this research, it could be the reference basis for future researchers in the relevant studies on social media, social capital, and sense of belonging.