Abstract: Combinatorial double auction(CDA) combines combinatorial auction and double auction.Compared with combinatorial auction and double auction,there is very litter documented research on CDA due to its complexity.An optimization model for combinatorial double auction based on integer programming method is established and transformed into single-sided auction,which will benefit to solve combinatorial double auction with the method used for single-sided auction and to make the problem much more easier.

Key words: combinatorial double auction, single-sided auction, optimization model, trade surplus