Abstract: Vendor selecting is the core of supply chain management.This paper proposes a structured model for vendor selecting problem.This model is based on AHP(analytic hierarchy process) and modified BP neural network.Levenberg-Marquardt algorithm is involved in training BP neural network weights.At last,the model is tested by real examples.The results show that this model is a simple way to deal with vendor selecting problem and makes the selecting result more objective.Besides,the model is flexible and can be app...