The invention discloses an automatic production line for cup bodies of vacuum cups (kettles). The automatic production line comprises a mouth cutting device, a mouth finishing and bottom finishing device, an upper angle and lower angle rolling device, a control device, a conveying device and a machine frame, wherein the mouth cutting device, the mouth finishing and bottom finishing device, the upper angle and lower angle rolling device, the control device and the conveying device are arranged on the machine frame, the mouth cutting device, the mouth finishing and bottom finishing device, the upper angle and lower angle rolling device and the conveying device are electrically connected with the control device, and the mouth cutting device, the mouth finishing and bottom finishing device and the upper angle and lower angle rolling device are connected through the conveying device. Compared with the prior art, the mouth cutting device, the mouth finishing and bottom finishing device and the upper angle and lower angle rolling device in the machining process of the cup bodies of the vacuum cups (kettles) are effectively integrated through the conveying device, moreover, the control device controls and coordinates the work, all the machining devices also can work independently, the whole production line can be controlled by a few personnel, so that labor resources and material management cost are greatly saved, a workpiece conveying and transferring process performed after machining of the traditional working procedure is omitted, the production efficiency is also remarkably improved, and meanwhile, the occupied space is also reduced.