Ultrasonography has been used in clinical practice for a long time and can help in the differential diagnosis of normal and abnormal forms of various tissues and organs. Therefore, it is also widely used in clinical practice. First of all, ultrasound can examine the normal and abnormal manifestations of substantive organs in human body, such as liver, gallbladder, pancreas, spleen, both kidneys as well as thyroid gland and breast gland, etc. The shape, boundary, internal echogenicity, adjacent relationship and various kinds of artifacts of these organs will be analyzed comprehensively, which can detect the disease status of certain organs, especially the occupying lesions; it also has great diagnostic significance for cavernous organs, such as gallbladder, The performance of the bladder, filled gastrointestinal tract, etc. can also provide an important diagnostic basis for the clinical diagnostician. Although ultrasound examination is widely used in clinical practice, it is generally used as a basis for differential diagnosis. In recent years, ultrasound has been used more in physical examinations and can achieve early screening for certain diseases. Especially when performing the differentiation between benign and malignant masses, different sonographic features are also available as a reference for diagnosis. Although ultrasound is widely available and is the preferred method of examination for some substantial organs, it has its own limitations.