Objective To investigate the diagnostic value of ultrasonography and CT in abdominal closed visceral injury. Methods 86 cases of patients who had abdominal closed injury(BAT)were selected as the research objects.After admission,all the patients were diagnosed by ultrasonography and CT,and the results were compared with the clinical surgical results.The coincidence rates and imaging findings of the two kinds of imaging diagnotic methods were analyzed. Results The surgical findings were treated as the gold standard.There were 70 cases (89injuries) of BAT with visceral injury.The diagnostic coincidence rate of CT was 91.01% which was higher than 76.40% of ultrasonography and the difference was significant (P<0.05).The coincidence rate of CT in the diagnosis of BAT with hollow organ was 92.86% which was higher than 60.71% of ultrasonography and the difference was significant (P<0.05).The ultrasound findings of parenchyma organ injury showed increasing volume of damaged organ,with uneven echo;Subcapsular hemorrhage manifeasted as organ local eminence,with hypoechoic or anechoic area;Complete rupture manifested as the change of the original morphology of organ,uneven echo and anechoic area around;CT imaging showed enlargement of the damaged organ volume and visible uneven density shadow.After enhancement scan,they were clearer.Subcapsular hemorrhage with organ eminence was crescent shaped and the hematoma part was not enhanced; Organ morphological changes were visible in complete rupture with relatively low density shadow. Conclusion The consistency of ultrasonography and CT in diagnosis of BAT with parenchyma organ is high, but the accuracy of CT in diagnosis of BAT with parenchyma organ is higher than that of ultrasonography.