In view of the problem that the relationship between the classification of highway maintenance project and its cost management is almost dissevered,and integrating with requirements of maintenance marketization,the maintenance projects are classified by characteristics of expressway,common highway,and country highway.

According to relevent law, the open maintenance marketization and system are set up.

Cost control of post maintenance engineering in Taiyuan-Jiuguan Expressway;

It is beneficial to the application and popularization of foamed asphalt cold regeneration in highway maintenance engineerings.

In recent years,the proportion of maintenance construction in highway maintenance has been on the rise,more and more problems appear concerning construction quality.

Combined with the maintenance work practice,the authors proposed their ideas on problem and management of completed materials of maintenance construction.

By practising on maintenance construction quality control,combined with the situation of construction quality control at present ,the authors proposed the measures of strengthening maintenance construction control,assuring construction quallity.

Application of cold-patch mixture to the maintenance projects in Inner Mongolia;

The most important symbol of rural highway maintenance marketization is maintenance project bidding system.

Abstract This paper analyses the position ofenglneeringconsulting business of Chlna In International engineering market and the imPortance In Chinese economic construction，andputs forwardsomeproposals to speed thedevelopmentoflt

In order to promote core competitiveness they take geological exploration, engineering market, mining development, and diversified economy as their pillar industry; provide geological services for the local economic development; look for economic growth points through structural adjustments and put emphasis on mineral resources and real estate.