The invention provides a satellite phone protocol simulation device which comprises a display control unit and phone simulation equipment for communicating with the display control unit. The display control unit is used for receiving a simulation input of a user and initiating a service simulation instruction to the phone simulation equipment; and the phone simulation equipment is used for receiving and parsing the service simulation instruction initiated by the display control unit, executing a corresponding service simulation operation according to the parsed service simulation instruction and simultaneously, sending a simulation notification service to the display control unit to carry out display. The invention further provides a satellite phone protocol simulation method. The satellite phone protocol simulation device and the satellite phone protocol simulation method which are provided by the invention have the advantages that a satellite phone system can be subjected to simulation development and debugging by the simulation device; and not only can development efficiency be improved and can development cost be reduced, but also development is not influenced by a weather factor and an electromagnetic environment, a debugging success rate is high, and reliability is high.