In order to study the application of flexible graphite grounding material in power distribution systems, a finite element simulation model of flexible graphite grounding device is constructed, by which the grounding resistance of a group of 10kV power distribution system flexible graphite grounding devices is calculated. It is proposed that the rectangular frame structure should be preferentially used in urban distribution networks to reduce grounding resistance by combining with the inherent characteristics of flexible graphite grounding material and common resistance reduction methods. The temperature rise of the flexible graphite grounding device under short-circuit fault and lightning fault has been simulated and calculated. The test device can operate normally under short-circuit fault conditions, but the local temperature rise is over standard under the lightning fault that once in 30 years.The research results have important reference value for the design, selection and application of flexible graphite grounding devices in 10kV urban distribution networks.