Explain experts, from the narrative dimension, think that the construction of the subject itself comes from the narrative process. There are certain restrictions in the process, so it needs other paths to supplement. The phenomenologist is trying to solve the problem of factuality substantiality and homoousia of the subject itself and to supplement from the experience dimension. They think that the subject itself is a story of the experience of its life. From the information dimension, we can not only break traditional constraints, but also can systematic ally study the construction of subject itself from the interaction and mutual transformation in different forms of information and from the construction activities of multistage intermediary and multidimension, thus to realize the reasonable interpretation of the information construction of the subject itself.