The invention is applicable to the technical field of intelligent power grid and renewable energy access, and provides an electric vehicle optimal scheduling method and a terminal device, and the method comprises the steps: obtaining a charging priority value and a V2G priority value of a target electric vehicle according to the obtained number and charge quantity information of the target electric vehicle; obtaining the V2V power maximum value of the electric vehicle executing the V2V, and determining the sequence of the electric vehicles executing the V2V according to the V2V power maximum value, the charging priority value and the V2G priority value; according to the determined sequence of the electric vehicles executing the V2V, executing the V2V; taking benefit maximization of an electric vehicle cluster charging and discharging station as an objective function. Through the integer programming mode, the optimal scheduling strategy of the target electric vehicle is obtained, and the optimal scheduling strategy of the electric vehicle to be served can be obtained on the basis that the benefits of the electric vehicle cluster charging and discharging station, the power distribution network and the electric vehicle user are fully considered.