A remote maintenance system is provided that makes it easy to comprehend support received from an operator. In this system, an image forming apparatus receives an image of the image forming apparatus that is photographed by a mobile terminal from the mobile terminal, transmits the image of the image forming apparatus to an operator terminal, receives support information from the operator terminal, and transmits the support information to the mobile terminal. The mobile terminal photographs the image forming apparatus, transmits the photographed image of the image forming apparatus to the image forming apparatus, receives support information from the image forming apparatus, and based on coordinate information included in the support information, superimposes and displays a guide image included in the support information and the photographed image of the image forming apparatus.