X-pinch radiography experiments were carried out on the 1 MA QiangGuang-1 facility to investigate the wire core behaviors of the tungsten and aluminum planar wire array. An axial quencher and over-massed loads were used to suppress keV radiation from the planar wire array. Two-wire 30 lm Mo and/or 25 lm W X-pinches were used as backlighters. The x-ray point-projection images showed quite uneven characteristics of the dense wire cores and the current distribution in the linear array. For the W single planar wire array (SPWA), Wire core diameter profiles are likely to reveal that the initial current distributed inductively among the wires with the same diameter in the array, and both inductively and resistively among the wires with different diameters. For the Al SPWA, wires in different positions were in quite different ablation processes. No correlations of stratifications or plasma jets between adjacent wires were observed.