A data processing method, applied to an applet, includes: sending a plug-in service request to a platform server, the plug-in service request comprising a plug-in identifier configured for the platform server to establish a usage association between a plug-in corresponding to the plug-in identifier and the applet, wherein the plug-in has an independent data server; receiving an applet access request, determining whether the applet access request and a service corresponding to the plug-in meet a preset correspondence, and if it is determined that the applet access request and the service corresponding to the plug-in meet the preset correspondence, loading the plug-in according to the usage association; and sending the applet access request to the plug-in, so that the plug-in completes a task corresponding to the applet access request by accessing the data server of the plug-in.