The invention discloses an equipment-crossing capturing-replaying method of a Web application. The capturing-replaying method comprises the following steps: (1) mounting a client side on each of user equipment A and user equipment B respectively; (2) recording a DOM (document object model) node corresponding to each event in the Web application and storing the DOM node to a script through a foreground module of the user equipment A according to a DOM document tree of an existing Web application, and then, sending the script to a server through a background module, wherein recorded information includes DOM node position information, context information and body information; (3) while the Web application on the user equipment B is replayed, obtaining the script from the server through the background module of the user equipment B, performing fuzzy matching on the real-time content, in a webpage, of the Web application and the content recorded by the script according to the recorded information in the script, and replaying the Web application. According to the capturing-replaying method, the event script is stored in an XML document, good in expansibility and convenient to edit, and can be freely shared between users.