Abstract: Objective:To explore the application effects of color Doppler ultrasound in the diagnosis and treatment of brachial artery injury.Methods:The color Doppler ultrasound imaging of brachial artery injury complicated with different degree blood supply obstacle of upper limb in 38 cases were observed,the treatment value of which was explored.Results:Twenty-one cases with brachial artery injury complicated with thrombosis were found using ultrasound,18 cases of which were determined by operation.Seventeen cases with possible brachial artery injury were found using ultrasound,15 cases of which were determined by operation.The thrombosis in brachial artery of patients decreased significantly 1 and 2 weeks after treatment.Conclusions:Color Doppler ultrasound is the most direct means in the diagnosis,treatment and prognosis of brachial artery injury,which is high accuracy.