The principle of bids without base price of construction project

According to the research and practice experience and combining with the example of bids without base price in the construction Project of Pudong international airport, the paper explain the principle of opening, justice and fair in bid activities, put forward the essential conceptions, main points of performance, contents and procedure in bids without base price, discuss it's real effects and practice condition. This paper is well worth to middle and large scale construction project in our country.