The present invention provides a Type-C-based USB connector capable of transmitting large current. Since the lower ground terminal and the lower power signal terminal both are of tear structures, and the ground base of the lower ground terminal, the power signal base of the lower power signal terminal, the main body of the lower ground terminal and the main body of the lower power signal terminal are all widened parts, the active areas of the ground terminal and the power signal terminal are larger, which improves the ability and reliability to transmit large current, thus solving the technical problem that the temperature would be much too high when large current are transmitted. With the present invention, it is possible to improve reliability and operation ease of the product for transmitting large current.