1. A security domain management method for managing at least one security domain in a trusted execution environment (TEE) including the at least one security domain, comprising: obtaining property information related to a security domain; registering the security domain in a notification service to receive information related to an event, if the property information is not NULL; obtaining the information related to the event for a security domain if the event for the security domain is identified; and notifying at least one other security domain of the information related to the event for the security domain based on information for the notification service, the information for the notification service being determined based on a result of the registration, wherein the information related to the event is sent via a TEE kernel, and wherein the information for the notification service includes at least one identifier of the at least one other security domain, at least one group identifier of the at least one other security domain, an identifier of the security domain, and valid period information.