Abstract: The authors combine the advantages of semantic nets and mental imagery methodology, and present a method of relationship model representation for computer.That is semantic nets of mental imagery methodology.Joining the representation of information is in order to achieve related reasoning of imagery thinking.The object-oriented method describes the thing being studying doubly, viz.static describing and dynamic describing.The authors present a IAS algorithm based on AS and MMACS algorithm, and give the operation steps of IAS algorithm.The experimental results show that IAS algorithm is able to find a better solution for mental imagery semantic nets.