Equipment for supplying a lubricant for a rolling roll of a rolling mill for a flat shaped metal material, comprising: a plurality of spray nozzles (1a, 1b) which are arranged in an axial direction of said rolling roll and which spray a lubricant toward said rolling roll together with a gas in a particulate or atomized state; lubricant feed devices which feed a lubricant to the spray nozzles; and a gas feed device which feeds a gas to the spray nozzles, wherein when designating the spray nozzles which are positioned at the both ends among the spray nozzles which supply a lubricant to the parts of said rolling roll corresponding to the width of said flat shaped metal material as the side spray nozzles and designating the spray nozzles which are positioned at the center as the center spray nozzles, the lubricant feed devices are configured to control the amount of lubricant supplied from the side spray nozzles to be larger than the amount of lubricant supplied from the center spray nozzles and the amount of the lubricant supplied from the spray nozzles between said side spray nozzles and said center spray nozzles to be not more than the amount of lubricant supplied from said side spray nozzles and not less than the amount of lubricant supplied from said center spray nozzles, characterized in that, said spray nozzles (1a, 1b) are comprised of internal mixing type spray nozzles and external mixing type spray nozzles, and the internal mixing type spray nozzles are arranged at the center in the width direction of said flat shaped metal material as the center spray nozzles, and the external mixing type spray nozzles are arranged at the outside as the side spray nozzles. a plurality of spray nozzles (1a, 1b) which are arranged in an axial direction of said rolling roll and which spray a lubricant toward said rolling roll together with a gas in a particulate or atomized state; lubricant feed devices which feed a lubricant to the spray nozzles; and a gas feed device which feeds a gas to the spray nozzles, wherein when designating the spray nozzles which are positioned at the both ends among the spray nozzles which supply a lubricant to the parts of said rolling roll corresponding to the width of said flat shaped metal material as the side spray nozzles and designating the spray nozzles which are positioned at the center as the center spray nozzles, the lubricant feed devices are configured to control the amount of lubricant supplied from the side spray nozzles to be larger than the amount of lubricant supplied from the center spray nozzles and the amount of the lubricant supplied from the spray nozzles between said side spray nozzles and said center spray nozzles to be not more than the amount of lubricant supplied from said side spray nozzles and not less than the amount of lubricant supplied from said center spray nozzles, characterized in that, said spray nozzles (1a, 1b) are comprised of internal mixing type spray nozzles and external mixing type spray nozzles, and the internal mixing type spray nozzles are arranged at the center in the width direction of said flat shaped metal material as the center spray nozzles, and the external mixing type spray nozzles are arranged at the outside as the side spray nozzles.