The invention belongs to the field of daily consumption devices, and provides a method, device and system for expanding information carried by a target object. The method includes the steps that an NFC reading device reads an NFC label built in the target object, the NFC label comprises identification information of the target object, the NFC reading device finds the information, corresponding to the identification information, in a database according to the read identification information of the target object, and the NFC reading device sends the information, corresponding to the identification information, in the database to an output device to be output. According to the embodiment, the mode that the NFC label of the target object is read is adopted, the NFC reading device can output the information, corresponding to the identification information, in the database through the output device, the NFC reading device is not influenced by limitation of shapes and sizes, the quantity of the information carried by the target object can be greatly increased, influences on the appearance of the target object can be avoided, and compared with an existing method that a recording greeting card is sent, the method can effectively reduce the cost and enables information contents to be diversified.