The three-dimensional structure of high-performance fiber bundles are of paramount importance for their study in lateral compression mechanism. Modeling of their true morphologies is still fields of focus research, yet to be exhausted. In this paper, ANSYS were utilized to develop three-dimensional numerical model of fiber bundle on the computer in the way of simulation. This approach is enabled by the finite element packages. It is possible to simulate the true material morphology directly. The key issues of the simulation are to keep fiber volume fraction always a constant value and to ensure no intersection between fibers. This work can simulate the stochastic generation-growth of high-performance fiber bundle and reproduce morphology of fiber bundle on micron scale well and thereby provide reliable information for the study on the lateral compression mechanism in the future.