The invention discloses a circular capacitor production machine. The circular capacitor production machine comprises a machine frame, and a capacitor feeding device, a swivel plate conveying device, atinned wire point-welding device, a tinned wire detecting device, a tinned wire welding device, a capacitor overturning device, a rubber wire point-welding device, a rubber wire detecting device, a rubber wire welding device, and a finished product discharging device. The capacitor feeding device, the tinned wire point-welding device, the tinned wire detecting device, the tinned wire welding device, the capacitor overturning device, the rubber wire point-welding device, the rubber wire detecting device, the rubber wire welding device, and the finished product discharging device are sequentially arranged. The circular capacitor production machine has the advantages that the automation degree is high, working efficiency is high, the qualified rate of finished products is high, and welding is firm and stable.