The invention provides a stress sensing system and a robot applying the stress sensing system. The stress sensing system comprises a column body, multiple fixing rings, pressure sensing devices and acircuit device; the multiple fixing rings are arranged on the outer surface of the column body in a sleeving mode at intervals; the pressure sensing devices are arranged between two adjacent fixing rings in the multiple fixing rings; and the circuit device is electrically connected with the pressure sensing devices and used for determining the size and the position of pressure applying to the stress sensing system.