A seal mold divided structure for combination cable is characterized in that it comprises the following structures: a first cable and a second cable separated from the combination cable; a connector provided at the end of said first cable; a division molding portion that molds the division part between said first cable and second cable and keeps said first cable and second cable separated from each other; a connector molding portion that molds the connection part between said connector and said first cable; a protection tube that protects said first cable, with its ends respectively fixed to said division molding portion and said connector molding portion; and isolation portions, which are respectively inserted from the inner sides of both ends of said protection tube and wrap the exterior of said first cable, capable of preventing inflow of a molding compound.