To improve the sensitivity and accuracy of power cable fault location, a power cable fault location method based on Hilbert-Huang transform is proposed. For the problem of the singularity of the transient traveling wave signal is not clear when power fault happens, HHT can carry out adaptive time-frequency analysis to signal without choosing a basis function, and the empirical mode decomposition (EMD) method can be applied to unique decompose of the signal. EMD can maintain the good quality of the time and frequency characteristics of signal, meanwhile getting the time frequency and energy relationship of signal, which is good for extracting the singularity of signal. The fault location is simulated by different methods. The simulation results show the advantages of the HHT fault location method. This work is supported by International Science and Technology Collaboration Program of Henan Science and Technology Departement (No. 152102410009)