Abstract: Disclosed is a large-current transformer for an electronic round power meter, including a current sampling coil (2) and a current stick (1), where the current stick is a slotted stick, a middle section of the slotted stick is sleeved with the current sampling coil, inner slots at two ends of the slotted stick are inlaid with a first current insert (8) and a second current insert (10) respectively. The current transformer is easy to mount, has a reliable connection, a low temperature increase, high precision, and a low cost. A method of making the large-current transformer for an electronic round power meter includes: stamping a copper sheet into a flat current connector and a U-shaped current stick; where the U-shaped current stick passes through an inner hole of the current sampling coil, the flat current connector is inserted into inner slots at two ends of the U-shaped current stick, and the flat current connector is riveted firmly with the U-shaped current stick by means of riveting or spot welding.