The Collider is the most important equipment in high energy physics (HEP). After the finding of the higgs boson in Large hadron collider (LHC), Scientists in China decided to build a new collider, Circular Electron Positron Collider (CEPC). The CEPC has many advantages over the LHC, which gives the potential in HEP field. It is important to discuss the advantages of it and how it may compensate to the LHC to illustrate the benefits of it's construction.