In the group decision supporting system, no matter how excellent the individual decision terminal is, it's difficult to ensure the correction of the final decision without a efficient and reliable GDSS coordinated system.Since the voting instrument is the key part of the GDSS, the efficiency and the reliability of the system are very important and must be programmed specially. Under the common situation, the voting instrument is produced by the pure software method. However, the pure software method is liable to be attacked and destroyed by the computer virus and hacker program in the circumstance of the network group decision system. While, the voting model based on the hardware logic method takes the advantage of the speed and reliability over the software model.