Research conclusions: The study shows (1)Africa has extensive highway project contracting market．(2)Most of the African highway projects adopt”Design—Build”management system．(3)African highway design mode is more closely combined with the construction site conditions．and the content of design is more complicated and detailed(4)For African highway project，the contractor faces the various risks，SO the Chinese enterprises should fully investigate the situation，and adopt useful measures to reduce the risk to the minimum．