Method, device and system for processing short message sending failure

The invention provides a short message sending failure processing method, device and system, and relates to the technical field of communication. The method comprises the following steps: obtaining a first to-be-processed called user number corresponding to a short message of which the sending failure reason is that a user is not in a service area in a retransmission waiting short message queue of an SMSC, and screening HLR/HSS state information corresponding to the first to-be-processed called user number; and obtaining a second to-be-processed called subscriber number which is registered in the IMS domain and does not register the corresponding IP-SM-GW address, and initiating a call to a terminal to which the second to-be-processed called subscriber number belongs through the intelligent customer service system, so that the terminal to which the second to-be-processed called subscriber number belongs is restarted to log in the mobile communication network again. Therefore, the purpose of storing the IP-SM-