The current convertor comprises a current converting device and a sliding cover. The current converting device comprises a casing, a current converting module arranged inside the casing, two conductive terminals electrically connected to the current converting module, and a first sliding module disposed on the casing. The conductive terminals are partially exposed from the casing. The sliding cover has a second sliding module having two thru holes. The second sliding module is slidably disposed on the first sliding module for enabling the sliding cover to slide between a first position and a second position relative to the casing. When at the first position, the conductive terminals pass through the thru holes of the sliding cover for inserting into the conventional outlet, and when at the second position, the conductive terminals are arranged in a space surrounded by the sliding cover and the casing.