The Dielectric Barrier Discharge Plasma (DBDP) has been produced by the Dielectric Barrier Discharge (DBD) reactor that has been established to operate at atmospheric pressure. DBD reactor consisted of two parallel metal electrodes, one act as high voltage (HV) electrode with circular iron plate shape and the other is rectangular steel plate as the ground electrode with a dielectric material covered one of them. AC power supply has been used to provide the DBD circuit with AC voltage up to 15 kV peak value, 50 Hz. The dielectric material used which covered one reactor electrode is a glass slab. The gap distance of the discharge is fixed at 3 mm. Argon (A_r) and Air gases have been used in the experiment at 20 SCFH (Standard Cubic Foot per Hour) flow rate and a sinusoidal voltage is applied to the electrodes to generate a homogenous DBDP. The parameters of the discharge such as discharge current, discharge voltage, consumed power of discharge, streamer filament and emitted plasma light have been studied. A magnetic field, with the direction parallel to the electric field, is applied to the AC, DBD, but with using Argon A_r and Helium (H_e) gases.The effect of the parallel magnetic field for generating the DBDP has been investigated. It is indicated that, the discharge current in the antiparallel magnetic field is lower than that without the magnetic field. Also, the DBDP in the magnetic field is more luminous than that without the magnetic field. It is also found that, the area of Lissajous figure of the DBD in the presence of antiparallel magnetic field is little reduced than that without the magnetic field. It could be concluded that the effect of the magnetic field influenced DBDP progress.