The present invention discloses a detachable power cord structure for a portable hair curler, including a device tail sleeve and a tail wire. An elastic engaging assembly is arranged in the device tail sleeve, the tail wire is inserted into the device tail sleeve, and is engaged with the elastic engaging assembly. When the tail wire is engaged into the elastic engaging assembly, it can turn on the circuit and can be rotated freely. The power connector structure adopted by the present invention can be rotated through insertion of the device tail sleeve and the tail wire, and the elastic engaging assembly is arranged in the device tail sleeve. The tail wire can be rotated freely while the electrical connection is realized, and the tail wire is not bent or curved during use, thereby effectively ensuring the service life of the tail wire.