現今科技發展快速，使得人們使用網路更方便，也造就了網路社群的蓬勃發展，全世界最大網路社群臉書也成為所有人生活的一部分，其中臉書的社團是人們再使用臉書時最常使用的功能之一，不管是興趣或是交易，都能找到自己所喜歡的社團，每個人可能不只有一個社團，本研究想探討，當在這些社團中有哪些因素影響社團成員們參與這個社團的行為，社團的管理員面對社團參與度很低又該注意哪些問題。

使用者持續使用臉書這個網路社群的原因有兩點，第一，網路社群是獲得資訊很好的媒介，第二，許多人將臉書視為人際關係的一環，臉書對於人際關係相當重要，針對這點，本研究將社會資本與社會認同的概念來做為參與臉書社團的重要理論，區分出個人的感受與群體認同的程度，最後的實驗結果也呈現歸屬感在虛擬的環境中對人的影響依然是很大，群體對於社團的認同程度是代表這社團中大多數人對於社團的看法與重視程度，也影響著臉書社團活絡的程度。創立一個臉書社團相當簡單，任何人都能做到，但實際上在維持一個社團的運作與保持所有人對於社團的重視就有其難度，這也是成千上萬臉書社團的管理員所面對的。

Developing speed of technology is rapid, it makes human use internet more easily and virtual community grow up. The biggest virtual community in the world is Facebook, it becomes important part in people’s daily life. There is a common and useful function of Facebook is groups. If you have used Facebook, you must know. No matter interest or trading, you could find the groups you like. People could not have one group. They may join many kind groups. This study wanted to investigate what factor will influence members participate virtual community. The administrator of virtual community should take some measures to stimulate members’ participation and make the group better. The are some reason about the members continuously use and focus the group. First, the virtual community is a good way to get useful information. Second, many people use Facebook to expand their interpersonal relationship. Facebook is very important to interpersonal relationship. For the point of interpersonal relationship, this study consults social capital and social identity. The result is that sense of belonging affect participation in virtual community and the social identity of groups level represent the value of groups for members. It’s easy to found the group in Facebook, but how to maintain participation of member is a big question which many administrators also run into.

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