The invention discloses a cover structure of a vehicle charging socket, which comprises a base, a cover plate, a driving assembly and a limiter. Wherein the base is fixed on the vehicle body and provided with a through hole through which the charger passes, mounting cavities for accommodating the driving components are respectively arranged on both sides of the through hole, and a plurality of mounting holes are formed in the mounting cavities. The drive assembly has a drive arm, and one end of the drive arm is rotatably connected in a mounting hole through a first rotating shaft. At the end of the drive arm, an accommodation cavity is for, and a torsion spring is arrange in the accommodation cavity, and a torsion arm of the torsion spring extends out and is rotatably arranged on the basethrough a hook. The other end of the driving arm is connected with the cover plate through the second rotating shaft; a set of drive assemblies is respectively arranged in each mounting cavity. The stop is used to limit the rotation of the torsion spring. The cover structure of the vehicle charging socket of the invention realizes automatic opening of the cover plate and fixing after closing by driving a torsion spring in the assembly and cooperating with a stopper. The invention has the advantages of simple structure, stability and non-damage.