Method for automatically changing and accessing IP address

This invention discloses a method for automatically changing and accessing an IP address. A network device installs a program for interpreting a HTTP protocol packet request string and automatically changing the network configuration of the network device according to the network configuration of a control end of the packet source, so as to achieve the effect of accessing the device easily. The method actively learns the IP address required for setting a broadcasting network and automatically sets up the same IP address required for the same network, such that the control end does not need the configuration to access the network device by the device name for the configuration.