The invention discloses a system and a method for cloud service real-time falling-down detection. The system comprises an acquisition device, a mobile terminal connected with the acquisition device, a transfer device connected with the acquisition device and the mobile terminal separately, a cloud service platform connected with the transfer device, and a monitoring terminal connected with the cloud service platform, wherein the acquisition device comprises a controller, and a three-axis acceleration sensor, a three-axis gyroscope, a pressure sensor, a body temperature sensor, a heart rate sensor, a pulse sensor, a blood pressure sensor, a positioning module, a communication module and a storage module which are connected with the controller separately. According to the system and the method disclosed by the invention, the acquisition device, the mobile terminal and the transfer device form a stable data communication mode to ensure that the falling-down information of a monitored object is uploaded to the cloud service platform by virtue of the transfer device, and the real-time monitoring of quick falling-down and slow conditions of the monitored object is realized; and the data communication mode can realize functions of hierarchical processing, storage and the like of data, thereby greatly improving completeness and reliability of the data.