The present invention discloses a novel temperature sensor. The sensor comprises an installation device, a horizontal block and a temperature sensor body fixed at the top portion of the horizontal block, the temperature sensor body is connected with a connection wire, the installation device comprises a C-shaped clamping plate, the horizontal block is fixed at the outer wall of the C-shaped clamping plate, the bottom portion of the C-shaped clamping plate is in threaded connection with a lock screw, and the end socket of the lock screw is extended into the inner cavity of the C-shaped clampingplate; and a connection wire fastening device is fixed at the top portion of the horizontal block. The installation is convenient, and the practicability is high.