The present invention discloses a removable power cord structure for a portable head straightener, which has a device tail sleeve and a tail wire. An elastic engagement assembly is disposed in the device tail sleeve, and the tail wire is inserted into the device tail sleeve and engages with the elastic engagement assembly. When the tail wire engages the elastic engagement assembly, the circuit can be turned on and rotated freely. The power connector structure employed in the present invention can rotate through the insertion of the device tail sleeve and the tail wire, and the elastic engagement assembly is disposed on the device tail sleeve. While the electrical connection is implemented, the tail wire can be freely rotated, and the tail wire does not bend or bend during use, thus effectively ensuring the life of the tail wire.