1. A method for a browser to switch an IE kernel, comprising: generating a first IE kernel file and a second IE kernel file, and importing them into a browser client; determining, by a browser process, a currently adapted IE kernel version according to Uniform Resource Locator URL information submitted by a user; if the currently adapted IE kernel version is a first IE kernel, redirecting the browser process to a corresponding location to load the first IE kernel file; and if the currently adapted IE kernel version is a second IE kernel, redirecting the browser process to a corresponding location to load the second IE kernel file.