The disclosure discloses a method and device for implementing seamless switching between northbound Common Object Request Broker Architecture (Corba) interface specifications, which relate to northbound interfaces in telecommunication network management field. The method includes that: when a northbound component of an Element Management System (EMS) is initiated, according to configuration information of a northbound Corba specification supported by the EMS, a corresponding relationship between the northbound Corba specification and the configuration information of the northbound Corba specification supported by the EMS is established, and a specification switching file is provided to a Network Management System (NMS); according to a Corba specification switching command sent by the NMS, and according to the corresponding relationship between the northbound Corba specification and the configuration information of the northbound Corba specification supported by the EMS, the EMS acquires the configuration information required for the Corba specification to be switched; and the EMS executes the seamless switching between northbound Corba interface specifications by using the configuration information required for the Corba specification to be switched.