弹幕作为社交网站中的一种新型交互方式，让用户在观看视频内容的同时实现实时交互，因而受到了信息行为研究者的关注。为了探讨弹幕是否能够反映用户的情感体验及情感体验的改变，文章采用基于情感词典的文本分析方法，通过情感词的语义加权来获取弹幕情感值及情感类别，构建视频要素词典将带有情感倾向的弹幕归类，分析弹幕所反映的用户情感体验类型和趋势变化。研究发现通过该方法可以判断用户情感体验的分类，从情感立场、情感体验、情感表达等情感体验特征；用户交互行为能触发不同的情感体验，采访、故事、后期制作这3个视频要素对用户情感体验的影响较大，采访、故事则是触发弹幕用户情感体验的主要因素。

As a new interactive mode in social networking site, Danmu enables users to interact with video content in real time, so it has attracted the attention of many learners and researchers. This paper is to explore whether Danmu can induced the changes of user’s emotional experience. Using the emotion analysis method based on the emotion dictionary, the emotional value and emotional category of Danmu are obtained by the semantic weighting of the emotional words, and then construct the video element dictionary to classify the Danmu data with emotional tendency, so as to analyze the user's emotional experience reflected by Danmu data. The results show that the user's affective experience reflected by the video Danmu is mainly positive, and its emotional characteristics are mainly embodied in five characteristics: the subjectivity of emotional position, the consistency of emotional experience, the pertinence of emotional expression and so on. The interaction between users and video can induced different user's emotional experience, and the three video elements such as interview, story and post-production, have great influence on the user's emotional experience, interview and story are the main factors that induced the emotion experience of Danmu users.