Abstract: To improve the working efficiency of the dispatchers in coping with delayed trains in high-speed railway, delay time estimate method and adjustment rules for delayed passenger trains are studied. On the basis of this, the intelligent dispatching system for delayed passenger trains in high speed railway was developed by using visulization technologies including radar chart and electronic map. This system realizes the functions of real-time monitoring of delayed trains in high-speed railway, pre-alarming on key delayed trains under monitor, cause analysis of delayed trains, coordinated adjustment of train operation plan by multiple dispatchers and has a certain level of intelligence. helping to ease the work of the dispatchers. At present, the version 1.0 of the system has been officially put into use in CHINA RAILWAY and good effects of its application have been achieved.