本研究結合擬社會互動及智慧型手機中介傳播特性設計研究模型，了解訊息內容與擬通訊軟體特性對 K-pop 粉絲追星的行為影響。採線上問卷調查，有效問卷共 674 份，以台灣bubble 使用者為母體。結果指出，若偶像能夠掌握高度的自我揭露、頻繁地與粉絲進行互動，且 bubble 平台所提供的訊息共時性以及私密性，能有效培養粉絲所感受到的友誼關係以及加深粉絲對於身為偶像粉絲的自我認同，讓粉絲對偶像產生更強烈的情感面承諾，並且回饋至實際的購買行動。

 In order to find out the influence of Bubble message content and the characteristics of Bubble on K-pop fans, the study combined the characteristics of parasocial interaction and smartphone-mediated communication into a research model. An online survey was used and collected 674 valid questionnaires, with Taiwanese bubble users as the population. The result indicates that if idols could keep doing a high degree of self-disclosure, interacting with fans frequently, and the synchronicity and privacy of the information provided by the bubble app can effectively cultivate the friendship felt by fans and deepen fans' self-identification as a fan. It might allow fans to stay a stronger emotional commitment to idols and give back to actual purchases.