The invention discloses a harness assembly of an automobile combined headlamp. The assembly comprises a connector terminal which is connected with an electric wire, the electric wire is connected with a steering lamp, a high beam lamp and a position lamp after being divided, a connector protection sleeve is arranged outside the connector terminal, the electric wire is fixed through a supporting frame after being divided, and the supporting frame comprises a left support, an upper support and a lower support; the top end and the bottom end of the left support are each connected with a lock pin; and the two lock pins are movably connected with the upper support and the lower support. According to the harness assembly of the automobile combined headlamp, due to the fact that the supporting frame is arranged and used for fixing the divided electric wire, an original messy electric wire becomes more tidy; the supporting frame is sleeved with an insulation casing pipe, so that good insulation is achieved. The lock pins are opened to put the electric wire into the supporting frame, the lock pins are closed to fix the electric wire into the supporting frame, use is quite convenient, and the structure is simple.