A balanced current lamp module driven by a power source includes a first balanced current unit, a second balanced current unit and a balanced transformer. The first balanced current unit includes a first transformer, a first lamp and a second lamp. The first transformer has one coil electrically connected with the power source, and the other coil having two ends respectively electrically connected with the first lamp and the second lamp. The second balanced current unit includes a second transformer, a third lamp and a fourth lamp. The second transformer has one coil electrically connected with the power source, and the other coil having two ends respectively electrically connected with the third lamp and the fourth lamp. The balanced transformer has one coil electrically connected with the first lamp, and the other coil electrically connected with the fourth lamp.