With the rapid development of China's construction market, bidding for construction projects is widely used in the market economy. At present, China's construction market usually adopts composite pre-tender estimate as the basis for bid evaluation and calibration. This requires bidders to understand the operation method of compound pre-tender price bidding and analyze scientific quotation. However, due to the late start of the bidding system in China, the quotation decision-making stays in the empirical stage, and we can only rely on the empirical quotation when bidding for the composite bid. Therefore, for contractors, how to determine the bid price by scientific methods has become a problem worthy of attention. This paper introduces the significance and procedure of bidding, and introduces the connotation and calculation method of composite pre-tender price. Based on the previous research on bidding, the establishment and optimization of the model, the original model and the adjusted model are analyzed and compared with the actual project to help bidders gain an advantage in bidding.

In this paper, bidding is regarded as a static game with incomplete information, and a multi-person bidding model with compound base price is established on the basis of Nash equilibrium of Bayesian theory in game theory. Through further analysis, the original model is optimized, and the advantages and disadvantages of the two models in practical application are summarized. Finally, through practical verification, the operability and correctness of the two models are proved, and the calculation method is practical and scientific, which provides a basis for bidding units with compound base price.