Key ring

The utility model discloses a key ring which comprises a key ring body and a key chain with one end connected with the key ring body. The other end of the key chain is connected with a universal serial bus (USB) disc, a port of the USB disc is provided with a disc cover, a button battery is arranged in the USB disc, a switch button and a light emitting diode (LED) lamp are further arranged on the USB disc, and the button battery, the LED lamp and switch button are connected in series. The key ring has the advantages that the structure is simple, the other end of the key chain is connected with the USB disc, therefore the key ring has an electronic storage function, the button battery is arranged in the USB disc, the switch button and the LED lamp are further arranged on the USB disc, and the button battery, the LED lamp and the switch button are connected in series, so that the switch button can be turned on to enable the LED lamp to give out light at night or in poor ambient light, keys can be conveniently f