The present invention relates to the field of intelligent wearable devices. Disclosed is a system for monitoring health conditions in a public place and issuing an alert. The present invention comprises a control server, a plurality of terminals, a plurality of routers and multiple sets of wireless sensing devices. Each wireless sensing device comprises: a sensing module, a wireless module and a power module. The control server comprises: a processing module, a display screen, an input device and an alert module. The present invention can monitor physiological characteristics and conditions of each object to be monitored in a public place and issue an alert when an abnormality is detected.
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