Due to the harsh laying environment, the control cable can easily lead to local defects and affect the operation of low-voltage equipment. Frequency domain reflection (FDR) method is a commonly used cable fault location method, but the traditional FDR is susceptible to noise interference, which affects its location accuracy. This paper proposes a fault location noise reduction method based on Empirical mode decomposition (EMD). In this method, the linear sweep signal is used to obtain the reflection coefficient spectrum of the measured cable, and the real part of the reflection coefficient spectrum is decomposed by EMD to obtain multiple modal components with different characteristics. Then, the modal components containing a large amount of noise are removed, and the remaining modal components are superimposed to reconstruct the reflection coefficient spectrum to achieve the purpose of eliminating noise. Finally, the fast Fourier transform (FFT) is used to process the reconstructed signal to obtain the positioning curve of the fault cable to complete the fault location. In this paper, a control cable model is built for simulation research. The simulation results show that the proposed method has strong anti-noise ability and high positioning accuracy.