By comparing data journalism and traditional news, this study tested the communication effect of data journalism from the following three aspects: subjects’ cognition and appraisal of data journalism, subjects’ memory on news,and subjects’ attitude changes caused by exposure to news. Results show that subjects preferred data journalism to traditional news. However,the comprehensiveness and objective perception of data journalism were not significantly better than traditional news. Subjects’ memory and attitude on data journalism were not significantly different from traditional news.