The utility model provides a lead forming device for a parallel ring of a generator. The device is characterized by comprising a bottom plate, wherein an arched backing, a starting cushion block, an ending cushion block, an Omega-shaped cushion block, an arched cushion block, a pressing device, a compact support device and a side compact support device are detachably arranged on the bottom plate. The lead forming device can be popularized and used for similar parallel ring structures of different products, and is time-saving and labor-saving; the condition of difficulty in product forming and size control is improved; and production efficiency and the quality of the product are effectively improved.