The embodiment of the invention provides a data updating method and device. The method comprises the following steps: dividing a data updating set, and performing data update according to the divided data updating set; when a data updating unit in the data updating set is downloaded, adding an updating notification message in an updating message queue; and monitoring the updating message queue, and storing the data updating unit in a corresponding database according to the newly added updating notification message for the operation of a corresponding client. According to the embodiment of the invention, the problem that the data cannot be updated in time resulting from that the global data updating unit cannot be downloaded or is downloaded slowly because a certain third party server interface cannot be connected or the transmission speed of the certain third party server interface is slow is avoided, and the data updating speed and timeliness are improved.