In the era of mobile internet，“time” has been re-endowed with meaning. In the face of ubiquitous connections，it is important to understand how users use their time. In the past year，with the in-depth development of mobile internet applications，short video applications were rapidly emerging as new traffic portals. The distribution of user’s attention presented a new feature under the model of “embedding-stratification-synchronization”. Behind the rise of short video，the potential problem of user attention allocation also deserves attention and reflection.