Abstract As to our country present situation, joins the World Trade Organization along with the market economy development with our country, our country's construction enterprise will be facing a more stern competition and the challenge, but many construction item's cost control work has not obtained develops well, Our country Majority Construction Enterprise did not have the establishment perfect item cost control system, this will certainly to cause it to be in the inferiority in the keen competition. The construction enterprise strengthens own cost control, is obtains from the construction item cost management crux, is constructs the enterprise development the objective need. This article from introduction knowledge economy condition's cost control concept's angle embarking, unifies Our country Majority of Construction Enterprise's truth, auxiliary by case, to the construction private costs control's principle, the control system's construction, the control method and so on proposed the feasibility opinion and the suggestion, help the building construction enterprise by the time through to complete the cost control work to lower enterprise's cost level, raises enterprise's economic efficiency, the enhancement enterprise's market competitiveness. Key word: Cost control construction enterprise construction item control system可以吧?我可是很认真翻译的呀!