DNS hijack monitoring method and device

The invention provides a DNS hijack monitoring method and device. The method comprises the steps that a monitoring task is sent to a client side, so that after determining the monitoring task, the client side starts a browser to open a predetermined webpage which is indicated by URL information and obtains monitoring information in the webpage opening process; the monitoring information sent by the client side is received; if the client side has DNS hijack is determined according to the monitoring information. The method can actively find out the DNS hijack problem in time, effectively enable corresponding DNS hijack to reoccur in time, lower labor cost, and improve efficiency.