The present invention relates to a passive RFID (radio frequency identification) technology-based pressure sensor module and pressure sensor. The passive RFID technology-based pressure sensor module comprises a metal plate, a plurality of telescopic brackets and an electronic tag; the metal plate is connected with the electronic tag through the telescopic brackets; and the electronic tag is used for receiving energy signals transmitted by an RFID reader-writer, generating feedback signals according to the positional relationship of the metal plate and the electronic tag after receiving the energy signals, sending the feedback signals to the RFID reader-writer. According to the passive RFID (radio frequency identification) technology-based pressure sensor module and pressure sensor of the invention, long-distance signal transmission can be realized through using the RFID technology, and a transmission distance between the pressure sensor module and the reader-writer can be prolonged.