SoSs (System of Systems) is an unpredictable entity for the users who wish to control and utilize it before it has been constructed. How to distill the concept which is buried in people’s brain about the SoSs is a difficult and critical work in the SoSs Requirement Research. This thesis introduce some authority concept of SoSs firstly. By the reference of framework of JCIDS which is USA DOD newly developed Capablity Analysis Methods, we proposed a SoSs Requirement Development Process (SoSs RDP) Model and give details about all four phases and 12 steps. Under this SoSs RDP Model, a series of Modeling Methods are applied in the SoSs Reqirement Modeling, such as UML, IDEF0. At last we developed an prototype of SoSs Modeling Software Toolkits which support the modeling and analyzing of SoSs Requirement development. This work will contribute to establish an uniform, standard analysis method for SoSs Requirement Engineering to resolve the complex, uncertain and interaction about the SoSs Requirement.