Belt-type RFID reader and prevent child or object loss system thereby

A belt-type RFID reader is provided. In the belt-type reader including a clip part and a body part, the belt-type RFID reader according to an embodiment of the present invention includes: a flexible substrate which is embedded in the body part and has three antenna elements spaced apart from each other; and an RFID reader part which is connected to the antenna of the flexible substrate and receives a radio signal received from the antenna. When the belt is fastened to a human body, the three antenna elements are radially dispersed and arranged, wherein the antenna element has a first region and a second region which are symmetrical, and the first region and the second region are disposed to be opposite to each other with respect to the flexible substrate. Accordingly, the present invention can effectively receive an RFID signal in a shadow area of a mobile communication network.