To provide a method for producing a rubber-steel cord composite material which prevents deterioration in durability caused by a coating amount of unvulcanized rubber, degradation in fatigue resistance and workability and stably obtains excellent durability and fatigue resistance.

In producing a rubber-steel cord composite material of two-layer twisting structure by coating the circumferences of core made by twisting one or a plurality of filaments with unvulcanized rubber, twisting a plurality of filaments to become a sheath while forming gaps between the filaments, in the cross-section of the cord, when the area of region enclosed by the circumscribed circle of the core and the contour lines of the core is A and the cross-section area of the coating layer of the unvulcanized rubber coating the core is B, the unvulcanized rubber is coated under conditions that the areas A and B satisfy the following formula: AB5A.