A wiper ring provided includes a ring body and a number of brushes. The ring body has an outer side surface and an inner side surface opposite to the outer side surface. The wiper ring includes a mounting portion located on the outer side surface. The ring body is mounted to a cable through-hole of a charging pile via the mounting portion. The number of brushes are arranged on the inner side surface. Each of the number of brushes has an end fixed to the inner side surface of the ring body and the other end, opposite to the end, faces a center of the ring body or a defined point of the ring body. The number of brushes cooperatively form a through-hole having a diameter less than that of the cable for allowing a cable to pass through. A charging pile using same is also provided.