Abstract: A pulse current processing apparatus includes a bidirectional tension and pulse current application apparatus, a real-time thin metal strip shape detection apparatus and a supporting base. In the apparatus, the tension is applied in the rolling direction and the transverse direction to effectively improve the strip shape flaws of the thin metal strip, and realize the rapid straightening of the thin metal strip; at the same time, the stress status of the thin metal strip is changed by applying the pulse current along the rolling direction or the transverse direction or applying different tensions in two directions; secondly, compared with the conventional heat-preservation heating and annealing apparatus, the pulse current can realize high-efficiency control of mechanical properties of the thin metal strip, and rapidly eliminate the internal stress; further, the strip shape is monitored by the laser ranging to ensure the strip shape consistency of the thin metal strip.