The invention discloses an access control method of an intelligent machine data network. An intelligent machine is provided with a data network switch. The access control method comprises the steps that: a user enters set options, and selects an application program of allowing to actively opening the data network switch according to a prompt, and storing setting; 2, the user opens the application program, the application program judges a switching stage of a data network, if the network switch is opened, a network connection is executed, and otherwise the step 3 is executed; 3, the application program obtains the set options, if an authority of actively opening the network switch is not obtained, the user is reminded of statically opening the network switch, if the authority of actively opening the network switch, the step 4 is executed; 4, the application switch actively opens the network data switch for carrying out network connection; and 5, after accessing the data network, the application program actively closes the self opened data network switch. The access control method overcomes the defect of statically opening/closing the data network switch by the traditional intelligent machine is overcome, and is applied to the data network access control of the intelligent machine.