Abstract: The paper summarizes the imaging evaluation methods for the degree of carotid artery stenosis, and analyzes the unique advantages and limitations of different imaging techniques in vascular imaging, based on existing guidelines and consensus. The paper focuses on reviewing the clinical applications of several new ultrasound technologies, including the application of advanced hemodynamic parameters such as blood flow turbulence index (Tur) and wall shear stress (WSS). Carotid artery stenosis is closely related to cardiovascular disease. Although non-invasive and radiation free ultrasound technology still has limitations in diagnostic accuracy to a certain extent, with the continuous emergence of advanced functions such as ultrasound hemodynamics and vascular elasticity, the combination of multi-modality and multi-parameter ultrasound is expected to become an important method for efficient diagnosis of arterial stenosis in the future.