The invention relates to the technical field of sheet punching, in particular to an automatic blanking and punching production line for sheets. The automatic blanking and punching production line comprises a sheet feeding device, a sheet inlet device, a sheet punching die, a sheet discharging device and a punched part receiving device. The sheet feeding device is used for grabbing single sheets to the sheet inlet device, the sheet inlet device is used for intermittently and horizontally conveying the single sheets into the sheet punching die, the sheet punching die is used for punching holes in the sheets, and the sheet discharging device is used for conveying out the punched sheets and stacking the punched sheets. According to the automatic blanking and punching production line for the sheets, the sheet feeding device, the sheet inlet device, the sheet punching die, the sheet discharging device and the punched part receiving device are used for achieving the procedures of sheet feeding, intermittent material inlet, sheet punching, discharging, stacking, punched part stacking and the like of the sheets, and therefore the automatic blanking and punching production line is high in production efficiency and can be matched with the punching rhythm of the sheet punching die. The automatic blanking and punching production line is suitable for continuously punching sheets.