4D ultrasound examination is a particularly important ultrasound examination tool in hospitals above the second level. 4D ultrasound examination can understand the specific situation of human organs and lesions from multiple angles and directions. It is mainly superior to the general color ultrasound examination, which is manifested in the multi-angle four-dimensional three-dimensional judgment of the corresponding diseases and the preliminary scientific basis and judgment of the nature of the diseases. At the same time, four-dimensional color examination can greatly improve the diagnosis rate of the disease and reduce the probability of the corresponding missed diagnosis. Only in this way can the disease be detected and diagnosed early and provide an important basis for the next step of disease judgment. The principle of 4D color ultrasound examination is mainly to produce large frequency sound waves, and such sound waves do not cause any harm to human body. This is obviously better than the corresponding CT examination. In general, it takes 1-2 minutes to check the corresponding parts of the examination, which can avoid too many examinations and affect the discovery of human diseases and delay the corresponding treatment time. These are the main advantages of 4D ultrasound examination.