Notebook computer keypad under metal body

The invention discloses a notebook computer keypad under a metal body, which relates to the technical field of notebook computers and comprises a notebook computer body, a blank C surface is arrangedon the upper surface of the notebook computer body, and a numeric keypad is adhered to the upper surface of the blank C surface. The notebook keypad is arranged below the metal body; the number patterns on the corresponding number keys are touched according to requirements; the metal material at the corresponding position is micro-changed; an ID deformation sensor in the key detects a touch signaland sends the signal to the numeric keyboard main control board; the numeric keyboard main control board receives information sent by the ID deformation sensor; the main control board judges which key is pressed by a user through the sensor ID, the input information is sent to the notebook computer main board through the main board plug or the USB data line after being processed, the notebook computer main board receives the input information, and therefore the function of the numeric keypad is achieved, and input is completed.