Abstract: The SFA(Spacecraft Fragmentation Analysis) is a software developed by China Aerodynamics Research and Development Center (CARDC), to analyze the on-orbit collision events and to model the spacecraft breakup debris characteristics. It is mainly based on the CSBM spacecraft breakup model, integrated with the NASA standard breakup model to provide an additional choice for users. The main functions of the SFA include the breakup degree analysis, the breakup debris generation and the debris distribution statistics. The calculation results can be displayed in real time and the statistics curves can be plotted after the analysis. In this paper, the function modules, the main algorithms, the interfaces and the usages of the SFA version 2.0 are analyzed. In addition, two on-orbit collision events, namely the Iridium 33-Cosmos 2251 collision and the Solwind P78 fragmentation, are analyzed using the SFA 2.0 as examples.