The invention discloses a keyboard structure, which is used in a potable electronic device and comprises a shell, a keypad and at least one connecting piece, wherein the shell is fixedly connected with keypad through the connecting piece and is at least provided with a positioning column; the connecting piece comprises an elastic ring with a diameter which is slightly smaller than the diameter ofthe positioning column; and the positioning column passes through the keypad, and the elastic ring is sleeved on the positioning column. The keyboard structure of the potable electronic device is fixedly connected with a keypad mat and the shell through connecting pieces which are elastic and tightly sleeved on the positioning column of the shell, and the positioning is reliable.