A USB connector for connecting with a USB female comprises a rotating shaft assembly which is capable of rotating, metal legs, a connecting line, and a substrate, wherein one end of the metal legs connects with one end of the connecting line, the metal legs are formed on a surface of the substrate, the connecting line is fixed to the surface of the substrate, and said rotating shaft assembly includes a rotating shaft and a rotating shaft sleeve, the rotating shaft sleeve is fixed on the surface of the substrate, and the rotating shaft is disposed in the rotating shaft sleeve and is capable of rotating relative to the rotating shaft sleeve. According to the USB connector and the USB device, the metal legs are formed on the surface of the substrate to ensure the connecting strength of the metal legs and reduce the thickness of the USB device.