RFID chip, RFID electronic tag and commodity

The invention discloses an RFID chip, an RFID electronic tag and a commodity. The RFID chip comprises a detection circuit, a storage unit, a first connection point, a second connection point and a rewriting circuit. The detection circuit is respectively connected with the first connection point and the second connection point, detects voltage or current at two ends of the first connection point and the second connection point, and generates a feedback signal; the detection circuit is connected with the rewriting circuit and is used for transmitting the generated feedback signal to the rewriting circuit; and the rewriting circuit is connected with the storage unit and is used for carrying out a writing operation on the storage unit and writing in starting record information when the feedback signal transmitted by the detection circuit conforms to a set condition. Whether the commodity is opened or not can be monitored, and the RFID electronic tag can be effectively prevented from beingrecycled. 本发明揭示了种RFID芯片、R