The commanding and serving center of the Dagang Company is the attempting and organizing dept of various service tasks，its main function is distributing manpower and machine in reason, supervising the operation process, managing the whole process efficiently. The biggest effect of the commanding center is to raise the operation efficiency and reduce the production cost. The center adopting the most advanced computer management system in domestic harbor area to control the daily operation. The system is composed of video frequency system, computer management system, communication system and official business system.     The video frequency system is composed of four 120 inches big screen TV, eight cameras and four most advanced computers. That system can control the whole service operation in every respect completely by exchanging one main picture to eight separate pictures. The system can not only master the current operation going, but also control the whole operation process, So that the commanding center can attempt the workers and machines rationally.