Objective Study of multi slice spiral HRCT and post-processing technique in fracture of the nasal region in the clinical application value, to improve the accuracy rate of diagnosis ofnasal fracture. Methods Observation of nasal fracture treatment using multi detector row spiral CT in 32 cases of fracture of the nasal region were thin high resolution scanning and post. Results In 32 cases of patients with bilateral fracture of nasal bone fracture in 16 cases,unilateral nasal bone fracture in 9 cases,nasal septum fracture 4 cases,fracture of frontal process of maxilla in 9 cases,5 cases of orbital wall fracture, nasal process of the frontal bone fracture in 2 cases, ethmoid or maxillary sinus wall fracture in 3 cases,nasal volume joint separation in 2 cases. Conclusion Multi slice spiral HRCT and post-processing technique of nasal fracture diagnosisvalue is superior to conventional X-ray and CT,is the best method for diagnosis of nasal fracture.