Abstract: The present invention discloses a portable routing device. One of the main features of the present invention is that the present invention utilizes a domain name signal as a switch on signal of a routing module of the portable routing device to maintain the off status of the routing module so as to saving power thereby. In another way, the present invention further capable of switching off the routing function thereof by determining if any network source having a higher priority exists so as to save the unnecessary waste of power. By avoiding the unnecessary routing action, the present invention is capable of saving power without affecting the normal use of the user.