The invention provides a control method of a switch, wherein the control method is applied to a communication network containing the switch and a mobile terminal. The control method comprises: handshake of a switch and a mobile terminal is realized to establish communication connection; whether the switch is in a normal working state is determined; if so, a next step is executed; and if not, abnormal working state information of the switch is displayed; a configuration secret key is inputted to determine whether the mobile terminal has configuration permission; if so, an instruction is outputted and a command is inputted to enable the user to input a configuration instruction to configure a working attribute of the switch; and if not, whether the switch is in a normal working state is determined again, wherein whether the switch can transmit a data packet sent by the mobile terminal to a target address from a source address being the mobile terminal completely without any error is used as the determination basis for determining whether the switch is in the normal working state. According to the invention, the operation state of the switch can be known by the mobile terminal and the switch can be configured and managed at any time at any place without any data line.