With the rapid development of fragmentation reading, the way of academic communication has been influenced, and related research has attracted the attention of the academic circles. This thesis is aimed at studying the character of fragmentation reading and its influence factors, based on TAM model, motivation theory and theory of use and gratification. Empirical quantitative research over fragmentation reading behavior is done by taking WeChat platform as the research background and app So jump to make the questionnaire. According to the related research, the character of the way of fragmentation reading behavior, level, frequency, time and active state are obvious. At the same time, people could sense the impact from the influencing factors, like PU, PEOU, perceived entertainment, perceived sociality, perceived cost, and subjective norm. The main group reading fragmentation is the youth group because they can use the intermediary effectively. Fragmentation reading in Wechat has positive impact on academic reading of students. However, it has the negative effect on depth reading.