The invention discloses a method for controlling data transmission. The method comprises the following steps: a first server receives a notification instruction, wherein the notification instruction contains a region identifier of a region where a user who uploads data is located; the first server sends a dragging instruction to a second server corresponding to the region identifier according to the region identifier; and the second server drags data from a third server according to the dragging instruction. The invention further discloses a system for controlling data transmission.