The differences between the public project and the private project come to decide that they have not the same factors during the evaluation.

With the rapid development of our society and economy, there is urgent demand for public projects such as infrastructure; yet, we have been confronted with difficulties to achieve the goal, as the traditional mode of running a public project only by the central or local government.

It is necessary and feasible to conduct performance evaluation of public project expenditure as the proportion of public project expenditure in government finance is becoming greater and greater.

The deep development of Information Technology provide many ways to improve the efficiency of railway project cost management.

This paper discusses the characteristics of railway projects, and analyses the social risk factor in the preparation and construction processes social evaluation.

In recent years,more normative marketing of highway engineering projects bidding has been established,the act of corruption has also been a considerable degree of containment.

This paper briefly deals with the economic evaluation indexes and methods commonly used in the highway projects, analyzes some factors which affect the economic evaluation and puts forward a certain noticeable problems.

To contractors, road engineering project has a great deal of risk in the course of the whole operation, especially, at construction stage.

The road engineering project is carries on in the complex nature and the social environment, it is a long construction cycle, need more invests, requests much technologies, the internal structure of it is complicated, it is also a construction process with widespread external relations.

The road engineering project which is a construction process with long construction pe- riod, large investment, high technical requirement, complex interior structure and comprehensive exterior relation is carried on in the complex nature and social environment.