USB flash disk

The utility model discloses a USB flash disk. The USB flash disk is composed of a USB flash disk body, an elastic rope, a sucker, a mirror plane ball, a gap, an LED lamp and a connecting rod. As the mirror plane ball and the LED lamp are arranged on the USB flash disk, when inserted into a computer, a loudspeaker or other electronic devices, the USB flash disk can project colorful light to create a visual atmosphere; the sucker is arranged on the USB flash disk, and therefore the USB flash disk can be directly adsorbed on a wall through the sucker; in addition, the sucker and the connecting rod of the USB flash disk can form a closed loop structure, the USB flash disk can be hung on a hook and other articles through the closed loop structure under the condition that the sucker cannot be used for adsorption, use is flexible, and it is effectively avoided that the USB flash disk is lost as a user leaves the USB flash disk about at will. The USB flash disk has the advantages of being simple in design, low in cost, reliable, durable and high in practicability.