A terminal device, an interactive voice response device, and a missed call reminding system and method are provided that relate to the field of computer and communications technologies. In the embodiments of the present invention, in the interactive voice response device, all user accounts that use a terminal device are bound to the terminal device, and based on an operator's call forwarding service, experience of a missed call reminding service that is previously not accomplishable by the operator is provided for a terminal user, and a missed call can be sent into the terminal device in time when a subscriber identity module card of the user is unavailable, which enables the user to obtain better experience of missed call reminding.
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