Abstract: The paper proposes a wireless transmission method of microwave energy based on software radio with completely independent nodes and distributed beam forming. The extended Kalman filter algorithm is used to estimate and correct the carrier frequency offset of each transmitting node, and the one-bit feedback algorithm is used to adjust the transmitting phase of each transmitting node, so as to concentrate their energy on the receiving node, maximize the collected energy and improve the energy transmission efficiency. The experimental results show that under the condition of four sending nodes, the receiving node can obtain 11. 54 dB gain, which can greatly improve the microwave energy transmission efficiency, laying a foundation for further expanding the microwave energy and wireless charging of low-power electronic devices.