An image forming system includes an image forming apparatus and a mobile terminal. The image forming apparatus includes: a two-dimensional code output unit for outputting a two-dimensional code into which address information of the image forming apparatus is converted; and a job execution unit for executing a job transmitted from the mobile terminal that has accessed the image forming apparatus based on address information into which the two-dimensional code obtained by photographing an image of the two-dimensional code outputted from the image forming apparatus by the mobile terminal is inversely converted. The mobile terminal includes: a photographing unit for photographing an image of the two-dimensional code; an inverse converter for inversely converting the photographed two-dimensional code into address information; and a communication unit for accessing an address of the image forming apparatus, which address is obtained through the inverse conversion, to transmit a job.