Abstract:In order to solve the problem that the third software must be used to realize the communication between Matlab and InToueh, and by taking Matlab as client terminal and InTouch as server, two different methods based on DDE technology, named m -file method and s -function method, were developed to realize the direct communication between Matlab and InTouch for the first time. The examples of M - file and S - function to realize the communication between Matlab and InTouch were provided. It is proved that this two methods are easy to be realized and can support data exchange between MIMO models