Train control method and system

The invention provides a train control method and system, and the method comprises the steps that a stratospheric airship obtains train operation data of all trains in a set region through an airshipcommunication module, and determines the train control data of the trains according to the train operation data; the train obtains train control data through a train communication assembly and controls the train to run according to the train control data. The stratospheric airship is used for replacing a blocking system of the train, the stratospheric airship can obtain the train operation data ofthe train in the set interval of the stratospheric airship in real time through an airship communication assembly, the train control data are sent to the train, and the train controls the train to run according to the train control data. Due to the fact that the communication delay between the stratospheric airship and the trains can be controlled within a short time, the running intervals of allthe trains in a set interv