A charging system is a charging system comprising a charger for charging an electric vehicle, in which the charger comprises: a base; a charger provided with a contact-type charging terminal that is in contact with or separated from a charging terminal disposed on a lower surface of the electric vehicle; a main cylinder connected to the base and supplying hydraulic pressure; a hydraulic regulator connected to the main cylinder and provided with an inner flow path formed therein; a first hydraulic cylinder respectively connected to the hydraulic regulator and the charger and communicating with the inner flow path; and a second hydraulic cylinder each connected to the hydraulic regulator and the base and communicating with an inner flow path.