According to the characteristics of bill of quantities quotation bidding and project payment cycle payment, based on the influence of time value of funds on project contracting income, and using the principle of unbalanced quotation and planning theory, a linear programming model and computer algorithm to optimize project bidding and quotation are proposed, which can increase the unit price of early construction projects and reduce the unit price of later construction projects, so as to increase the net present value of project contracting income while keeping the total static bidding quotation unchanged, so as to improve the actual income level. Reduce the static total quotation of project bids while keeping the present value of earnings unchanged to improve the winning rate.