Abstract: A useful tool for satellite engineering management,i.e.the work breakdown structure(WBS)and work package,is presented in this paper. It describes in detail the usage and establishment methodology for sunmma- ry WBS,contract WBS and engineering project WBS.In addition it also explains the work package,the product tree,the product matrix,the state- ment of work and technical specification through some practical examples. At the end of this paper,the application of this tool in the satellite engine- ering management is briefly discussed.