In the narrow pulse laser driving circuit, the transmitting and receiving antennas operate in dual polarization mode, which is affected by non ideal factors, making it easy for the polarization direction of the source signal to partially transfer to other polarization directions during signal transmission, resulting in polarization interference and introducing unexpected interference signals, reducing the stability of the control process. Therefore, a delay feedback control method for narrow pulse laser driving circuit is proposed. By describing the ratio of signal power to cross polarization interference through cross polarization isolation, quantifying the interference size, using blind source separation to restore the source signal, using kurtosis function to determine the optimal step size, extracting non zero kurtosis signals from multiple independent components as source signals, and achieving interference signal suppression. Construct a discrete orthogonal virtual circuit in the driving circuit of a narrow pulse laser, calculate the virtual components of the actual voltage and current orthogonal and unfold feedback to achieve delayed feedback control of the narrow pulse laser driving circuit. The experimental results show that the proposed method has good stability and can obtain more satisfactory delay feedback control results for narrow pulse laser driving circuits.