Objective To assess the relationship betw ee n the ultrasonographic manifestation and the pathological histology type in pros tatic cancer. Methods 50 cases of CaP and 50 cases of BP H were included in this study.All the patients were ultrasonographic,and the dat a were compared with its the pathological histology type postoperatively. Results The typical ultrasonographic manifestation is hypoecho ic nodules (62%) in CaP group and mixed echo nodules (54%) in BPH group.There is a significant differences between CaP group and BPH group( P