The Internet of Things device monitoring method includes that: device information of each of a plurality of online Internet of Things devices present in any one of the plurality of constructed Internet of Things device groups is acquired; group ring information is generated according to the device information of each of the plurality of the online Internet of Things devices; the group ring information is sent to the plurality of online Internet of Things devices offline device sent by any one of the plurality of the online Internet of Things devices in the online Internet of Things device ring, offline detection data is sent to each of the plurality of the online Internet of Things devices in the online Internet of Things device ring; and an actual offline Internet of Things device in the online Internet of Things device ring is determined according to response data corresponding to the offline detection data.