The invention discloses a new energy automobile charging socket cover opening and closing device. The new energy automobile charging socket cover opening and closing device comprises a cover, a sliding block assembly, a grid and a spring. The cover is provided with a first installing base and a second installing base. The sliding block assembly comprises a pull rod, a sliding block and a spring support. A guiding shaft and a hook are arranged at the upper portion of the pull rod. The guiding shaft is provided with a limiting protrusion, and the hook is rotationally connected with the first installing base. The sliding block is provided with a guiding groove and an installing groove. The guiding shaft is rotationally connected with the guiding groove, and the spring support is rotationally connected with the installing groove. The sliding block is provided with a rotation shaft rotationally connected with the second installing base. The grid is provided with a guiding block, and the sliding block is arranged in the guiding block in a sliding and penetrating manner. The guiding block is provided with a limiting groove, and the limiting protrusion is arranged in the limiting groove in a sliding and penetrating manner. One end of the spring is fixedly connected to the spring support, and the other end of the spring is fixedly connected to the grid. The provided new energy automobile charging socket cover opening and closing device solves the problem that due to the fact that a door cover is clamped in a shell, opening cannot be achieved through a hinge.