Objective To research the mechanisms, diagnosisand repair methodof venous trunk injuries without accompanied arterial injuries in extremities. Methods From January 1993 to June 2002, 12 cases of venous trunks injuries without accompanied arterial injuries in extremities were treated. All the patientswere males, their ages ranged from18 to 35 years. The interval between injury and operation was 30 minutes to 2 hours. The cause of injury was stab wound. Along with the antishock, the injured vessels were mended in 7 cases, end-to-end anastomosis wasperformed in 5 cases, and the operations were given in the patients with red wounds of the skull, chest or abdomen. Results One case died of severe cerebral trauma, the other 11 cases obtained primary healing. Dopplersonograpy showed that the blood vessels were patent. After a follow-up of 1 -5 years(2 years and 4 months on average), 8 cases recoveredthe function and circulation of extremities; and 3 cases accompanied with red injuries of nerves recovered the circulation of extremities, but did not recover the function with sensory disability and dyskinesia. Conclusion Emergent hemostasis, antishock, repair of the injured vessels as soon as possibleand treatment of associated injuries are important measures to save patients’ life in treating venous trunk injuries without accompanied arterial injuries in extremities.