The invention discloses an intelligent elder fall-down alarm system. The system comprises a trigger end, a far-end server, a network image photographing device and a far-end alarm system. The triggerend comprises a three-axis attitude sensor, a temperature sensing system, a GPS positioning system, a first MCU master control module and a first GPRS unvarnished transmission module. The far-end alarm system comprises a second GPRS unvarnished transmission module, a second MCU master control module, a sound alarm module and a photoelectric alarm device. The three-axis acceleration sensor is introduced to the trigger end so as to ensure the fall-down prediction accuracy; the temperature sensing system is introduced to judge the situation of bracelet wearing and automatic falling of the bracelet of the elder so as to reduce the false alarm rate; the Yolo training algorithm is added, and the elder fall-down state is confirmed through the image recognition mode so that the alarm accuracy canbe enhanced and the panic caused by false alarm can be reduced; and if the elder can stand up by himself within a short period of time after falling down after the alarm system is triggered, algorithmanalysis is performed through the captured image and the alarm is automatically released and the event is recorded.