Guard padding with sensor is provided, including a cushion pad and a sensor. The cushion pad has auxetic structure and is manufactured by a 3D printing process. The cushion pad has a slot at a side thereof. The sensor manufactured by the 3D printing process is disposed in the slot. The sensor is a pressure sensor, a humidity sensor or a temperature sensor. The pressure sensor generates a pressure signal, the humidity sensor generates a humidity signal and the temperature sensor generates a temperature signal. |