The disclosure relates to a battery testing apparatus. The battery testing apparatus includes a substrate and a body, the body is located on the substrate. The body includes a bottom, a central body and a cover, the bottom, the central and the cover is electrically insulated from each other. The substrate defines a first electrode point, a second electrode point and a third electrode point, the three electrode points are insulated from each other, the first electrode point is electrically connected with the central body, the second electrode point is electrically connected with the bottom, the third electrode point is electrically connected with the cover. The battery testing apparatus is configured to test electrochemical performance of a battery by a three-electrode method.