Under the background of Double World-class construction in China, all universities have been developing on their most advantageous disciplines and resources. A well-built structure of faculty is a key to a stable university. We proposed a 4D visualization model which consists of age structure, degree structure, graduation structure, and title structure. The 4D visualization model can reveal the faculty construction situation of a unit vividly, rather than displaying it by facts and sheets. The model showed the visualization of 1123 faculties from 56 iSchools in the world from the perspective of tiers and regions respectively. The results show that the biggest proportion of faculties are professors with doctoral degree and different education background; there is a tendency that iSchools in Tier 3 and Tier 2 are developing toward Tier 1; iSchools in Asia Pacific and Europe could enroll more younger teachers from other countries.