The Communication of DDE between Kingview and PLC designed in control test system DONG Xinli[1], WANG Jingjing[2] (1 Department of Computer Sciences, Ocean University of China, Qingdao 266071, China; 2 Information College, Qingdao University of Science & Technology, Qingdao 266042,China) Abstract: In design of the control test system, we present a design project of based on Kingview and MATLAB, and solve the primary technical difficulty: Dynamic data exchange (DDE) between Kingview and MATLAB. By uniting Kingview and MATLAB and joining DDE technique, the functions of control test system are enriched largely. DDE communication has a good effect by examination, so the design project has been of great value. Keywords: Kingview; MATLAB; dynamic data exchange (DDE); control test system