【Abstract】 Objective To discuss he enhanced character of contrastenhanced ultrasonography of different parts of carotid atherosclerotic plaques. Methods SeventyEight patients with carotid atherosclerotic plaques were examined with realtime contrastenhanced ultrasonography (CEUS). The perfusion modes of the neovascularization in carotid atherosclerotic plaques were observed. Quantitative analysis results of different parts of the plaque were compared. Results The enhanced intensity degree of different parts of the plaque ranged from high to low. The parts of the plaque were the upstream shoulder, the top, the downstream shoulder and the central part（P＜005）. Conclusion The realtime contrastenhanced ultrasonography can assess the vulnerable parts of carotid atherosclerotic plaque noninvasive and quantitatively.