Abstract: In order to solve the short distance and large shielding area of high resistance fault location by the cable input impedance spectrum method. This paper proposes a method for fault location and type identification based on frequency modulated continuous wave (FMCW). Firstly, the paper conducts simulation experiments on cable fault location by combining the principle of FMCW cable fault location with a cable distribution parameter model. The simulation results demonstrate that the amplitude spectrum can be utilized for fault location, while the phase spectrum can be used for fault type identification. The phase spectrum characteristics of various cable fault types (open circuit, short circuit, high resistance and low resistance) are derived based on the simulation results. Subsequently, the proposed method is validated through laboratory tests on a 300m long RF coaxial cable and a 194m long 10kV-XLPE cable. The experimental results show that the FMCW amplitude spectrum effectively locates cable faults, and the phase characteristics of the FMCW phase spectrum distinguish between open circuit, short circuit, high resistance, and low resistance faults. Comparing with the cable input impedance method, the FMCW method significantly increases the detection distance of high-resistance faults from 20 m to 200 m. It also reduces the shaded area ratio from 40% to within 18.2%, and improves the sensitivity of high-resistance faults increases from 2 kΩ(40Z₀) to 10 kΩ (200Z₀).