Credit evaluation is the basis for business decision-making. While the feasibility of credit model will directly influence the risk of deals. The designation of credit model with high reliability will make great sense for the progress of e-business technology. According to its fuzzy characters, a credit evaluation framework based on multivariable fuzzy reasoning is designed, which describes credit in a more natural way and its reasoning procedure is much closer to people's thinking process than others. This model has been applied to the business examples, which provides key technique support for e-commerce.