This thesis studys how work breakdown structure (WBS) in project planning could be of help for the case project. Moreover, and also want to analyze if and how This thesis aims to study how work breakdown structure (WBS) in project planning could be of help for the case project. Moreover. Finally it also analyzes if and how communication could be of help to solve delay problems by the use of WBS. All study is based on the theories of project management and communication. Case is from the real project of a recycle company in China.