The research object of this document is the construction of credit risk evaluation system of a domestic foreign trade food processing enterprises. Through the establishment of foreign customer credit risk evaluation system, it makes the enterprise develop accurate strategy with foreign trade customers, limit credit quota, credit method of payment, deadline and establish information management system and the database according to the customer resources, which realizes the informationization and modernization of the management of the foreign customer credit risk assessment, in order to replace the extensive management mode which includes heavy human factors. In addition, this document analyses the possible foreign customer credit risk, the possible impact caused by the risk and warning processing method. In the case of accuracy of the early warning information, we should simplify risk assessment, clear the division of responsibilities, assessment process and assessment standard of the internal credit risk assessment, and puts forward some advice of the credit risk evaluation, in order to make the selection of foreign customers more accurately and quickly and avoid all kinds of foreign trade credit risks.