The invention discloses a password initialization method of a preset account and related equipment. The method comprises the following steps: a virtual network function management entity acquired a virtual network function defining file, the virtual network function defining file comprises password initialization information and support information of third-party certification of the preset account; the virtual network function management entity acquires or produces the initial password according to the initialization information of the preset account, and acquires a docking certification parameter according to the support information of third-party certification of the preset account; the virtual network function management entity injects the initial password and the docking certificationparameter to a crated virtual machine while creating the virtual machine; the virtual network function entity or a network element management system reads the injected initial password and the docking authentication parameter while performing the initialization, thereby accomplishing the password setting or the docking parameter setting of the third-party certification of the preset account. By adopting the initialization method disclosed by the invention, the system security and the service online efficiency are improved.