The present invention discloses a lumped circuit balance converter applied to double-sided parallel lines, comprising a radio frequency transceiver, a balance converter, a filter and a matching network. The filter is connected with the matching network through the balance transmission line. The balance converter comprises a second circuit block, a first circuit block, a third circuit block, a first port, a second port and a third port. A positive polarity of a signal is positioned at the top of the second port and the bottom of the third port. Balance signals are respectively fed to the converter at the top of the second port and the bottom of the third port, and the signals are combined in the first port. The present invention has simple structure and better effect when used, can be easily changed to different required performance, and has good applicability and strong practicability.