An embodiment of the invention provides a data processing method and a data processing device. The method comprises the following steps of extracting feature information of a first Web page scanned by a user and feature information of a first form corresponding to the first Web page; acquiring the feature information of the first Web page when the feature information of a second form submitted by the user and the feature information of the first form meet preset conditions; acquiring data except for the feature information of the first Web page from a server; and forming a second Web page corresponding to the second form by using the feature information of the first Web page and the information of the data. The transmission amount of data information between the server and a browser is greatly reduced, so that bandwidth resources are saved.