The faulty section location methods for traditional distribution networks are no longer applicable for distribution networks with Distributed Generations (DGs) such as photovoltaic (PV) generations which influences the distribution of fault current. A faulty section location method based on MOPSO for distribution networks with DGs is proposed. Terminal state encoding based on fault transient component is determined aiming at single phase grounding fault occurred in distribution networks. The influence of fault current characteristics of PV generations under different light intensity is taken into account and switch function for dynamic switching of PV generations is proposed. Since the single objective optimization intelligence algorithms easily cause the non-convergence and the computational complexity of NSGA-II is high, the Multi-Objective Particle Swarm Optimization (MOPSO) method is used to solve the proposed problems. The difficulty of determination of the weights is avoided in MOPSO and the computation complexity is low. The simulation results show that the proposed method can achieve the single and multiple faulty section location in distribution networks with PVs, and is fault-tolerant to distortion information. This work is supported by National Key Research and Development Program of China (No. 2017YFB0902600), Science and Technology Project of State Grid Corporation of China “Key Technologies and Their Applications of Development Mode and Auxiliary Analysis of Dispatch-Control Integration System for Distribution Network, and National Natural Science Foundation of China (No. 51577049).