The invention relates to a flat battery transferring cart which comprises a cart body, a tray and a suction disc assembly. The suction disc assembly comprises a handle and at least one electromagnetic chuck, a control assembly is arranged on the cart body, a steering assembly is arranged on the tray, and a limiting assembly is arranged on the cart body. The flat battery transferring cart has the advantages that a flat battery is controlled by the control assembly to be sucked to the electromagnetic chuck on the suction disc assembly, and is taken through the handle, so that when an existing flat battery is taken and placed, the phenomena of pinching fingers and foots of operators are avoided, the flat battery taking and placing efficiency is improved, and flat battery taking and placing are facilitated; through the arrangement of the steering assembly, the tray can be rotated leftwards or rightwards by 90 degrees on the cart body, it is guaranteed that the tray can conduct flat battery taking and placing under different environments, the practical performance is improved, and the cart can be used by different operators to conduct flat battery taking and placing; through the arrangement of the limiting assembly, it is guaranteed that in the conveying and moving process of the cart body, rotating of the tray is avoided, and conveying safety is improved.