Abstract: Information exchange between CTC and TCC has a very important practical significance for the simulation of traffic dispatching, the study on new transport organization as well as application in related fields. By means of Visual C++ 6.0 development platform, this article combined with the work features of CTC and TCC, set a human computer interactive interface based on temporary limit scheduling command, simulated the setting of temporary speed limit command of CTC, the executable checks of TCC to temporary speed limit command, the information exchange process between two control centers.