The invention relates to a technological method for producing a double-narrow band aluminium plate through a large continuous casting rolling machine with wide rollers. The technological method is characterized in that through the division design of a double-narrow band casting nozzle, the roller convexity of the casting rollers is increased, the temperature of an aluminium alloy melting liquid is increased, the roller gap is expanded, and various parameters like preloading force on the two sides of the casting rollers, the length of a casting rolling zone, the rolling speed of the casting rolling machine and the cooling water temperature are adjusted and controlled, so that the reliability and stability of quality of the double-narrow band aluminium plate produced through the large continuous casting rolling machine with the wide rollers are guaranteed, besides, the yield is increased in multiples in unit time, and the cost is reduced. According to the invention, through the utilization of the technological method, the yield of the double-narrow band aluminium plate rolled through a rolling unit can be effectively increased, besides, the specification range of the aluminium plate rolled through the casting rolling machine is further expanded, and the utilization rate of the device is greatly increased; and the technological method has the advantages of high production efficiency, stable quality, high yield and low comprehensive cost.