The invention provides a fracture external fixator. A plurality of fixing rings are evenly arranged and connected through fixing links and are sleeved with a protective housing; three suction rods are evenly fitted inside each fixing ring, and fracture threads are disposed at tail ends of the suction rods; a temperature measurer is further fitted on the outer wall of the protective housing. The protective housing, the suction rods and the temperature measurer are arranged to give the protection to limbs from extra injury, the secondary injury to a patient caused by bone pins of an existing fixator is avoided, the temperature of the patient can be monitored in real time, and functionality of the fixator is improved.