Disclosed an image forming system including: an image forming section to perform an image forming processing to form an image on a sheet to eject the image-formed sheet to an sheet ejection section; a control section to control the image forming processing by the image forming section; a specify section to specify the number of units for stop in a temporary stop mode in which the image forming processing by the image forming section is temporarily stopped, wherein the control section allows the image forming section to stop the image forming processing when the image forming processing by the image forming section reaches the number of units for stop specified with the specify section.