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Electric vehicle charging station (EVCS) site selection problem plays an important role in promoting electric vehicle industry development. The purpose of EVCS site selection is to find optimal location considering some conflicting criteria. To handle the uncertainty of information in EVCS site selection problem, the picture fuzzy set (PFS) is a good choice, which is characterized by three functions: the degree of positive membership, the degree of neutral membership and the degree of negative membership. In this paper, an effective comprehensive framework is proposed to evaluate and select the optimal EVCS site under picture fuzzy environment. Firstly, from the perspective of sustainability, some main criteria and corresponding sub-criteria are determined by reference to the existing literature and experiences of experts. Secondly, some operational laws of picture fuzzy numbers (PFNs) are defined and the picture …