Experts play an important role in the peer review and they are selected from the expert databases,so studies on expert databases are very essential. At present, there are some problems in the inventory of expert databases in China,mainly in the accuracy of subject areas,the linear model of expert information which fails to reveal the relationships between experts. This paper proposes to build the experts database using the topic maps,so as to select the experts who have the same research subjects,and to carry out the avoidance system effectively.