In recent years, the electric vehicle market has developed rapidly, and the centralized charging of large-scale electric vehicles will pose a serious threat to the safe operation of the power grid. Therefore, how to predict the charging load of large-scale electric vehicles and further guide the charging behavior of users? This reduction of the impact of electric vehicles on the grid is worthy of in-depth study. This article is based on the current research status of electric vehicle charging load at home and abroad. Vosviewer and Citespace are used to carry out keyword co-occurrence and emergence analysis of the literature in the field from 2010 to 2021, the distribution statistics of published journals, and the cooperation between authors, institutions and countries. The research hotspots in this field are further clarified, and the current shortcomings and future developments are summarized and foreseen.