1. A method for a browser to switch an INTERNET EXPLORER (IE) kernel, comprising: generating a first IE kernel file and a second IE kernel file, and importing them into a browser client, wherein the first IE kernel file is an IE6 kernel file and includes a dynamic link library (DLL) of a IE6 kernel, a data file of the IE6 kernel, a language pack file of the IE6 kernel, and a registry configuration file of the IE6 kernel, wherein the second IE kernel file is an IE8 kernel file or a higher version IE kernel file and includes a DLL of a IE8 kernel or a higher version IE kernel, a data file of the IE8 kernel or the higher version IE kernel, a language pack file of the IE8 kernel or the higher version IE kernel, and a registry configuration file of the IE8 kernel or the higher version IE kernel; determining, by a browser process, a currently adapted IE kernel version according to Uniform Resource Locator (URL) information submitted by a user; in response to a determination that the currently adapted IE kernel version is the IE6 kernel, redirecting the browser process to a corresponding location to load the IE6 kernel file; and in response to a determination that the currently adapted IE kernel version is the IE8 kernel or a higher version IE kernel, redirecting the browser process to a corresponding location to load the IE8 kernel file or the higher version IE kernel file.