Method and device for installing profile of euicc

The present invention relates to a method and a device for installing a profile of an embedded universal integrated circuit card (eUICC) and, more particularly, to a method and a device for remotely installing mobile communication subscriber information (profile) substituting for a universal integrated circuit card (UICC), on a security module. The present invention relates to a method and a device for installing a profile of an eUICC of a network device, the method comprising the steps of: acquiring at least one of one or more profiles encrypted with a first password key and one or more first password keys encrypted with a second password key; and when profile installation for the eUICC starts, transmitting, to at least one eUICC, the one or more encrypted profiles and the one or more encrypted first password keys, wherein the first password key is re-encrypted with a third password key and transmitted to the one or more eUICCs and the encrypted profiles are decrypted by the first password key and installed on the one or more eUCCs, respectively.