The liver stiffness test is more accurate than color ultrasound for fatty liver screening. Liver hardness test is a rapid, non-invasive liver examination method established on the basis of ultrasound diagnosis by utilizing liver transient elasticity detector. It is mainly used for the diagnosis of liver hardness in chronic liver diseases caused by different etiologies. Liver elasticity has a good correlation with the degree of fibrosis of liver tissue, and to a certain extent, it can reflect the pathological changes of liver tissue. Color Doppler ultrasonography can take advantage of non-invasive and simple operation, and can visually observe the shape, size and indirect signs of the patient’s disease, as well as the characteristics of blood flow within and around the patient’s lesion. The ease of use of color ultrasound can be applied in the follow-up of liver disease. And liver stiffness measurement can get more information than color ultrasound, so liver stiffness test is more accurate than color ultrasound. Patients who want to test liver hardness are recommended to consult a doctor in time and choose the appropriate examination method under the doctor’s guidance.