Abstract: To address the deficiency of ignoring the interests of users in the process of product configuration, a combined product configuration method based on the CSP and Bayesian Network ( BN) was proposed in this paper. On the basis of CSP and BN theory, a product configuration model was established based on CSP and BN, and the specific method of solution was given, to assemble the computer as an example, a configuration system of assembly computer product was developed so as to verify the optimized configuration result, and it shows good feasibility and effectiveness.