Provided is an Internet-of-Things patch-type sensor device and a sensing information monitoring system and a sensing information monitoring method using same, which can easily obtain sensing information from an object to be measured, such as a human body or a thing, and check state changes of the object to be measured by using the sensing information. The Internet-of-Things patch-type sensor device includes: a lower plate unit detachably coupled to an object to be measured; a control panel unit stacked and fixed on the top of the lower plate unit; and a top plate unit stacked and fixed on the top of the control panel unit.