Background Introduction In recent years, with the advancement of science and technology, medical examination methods have been greatly developed, among which color ultrasound, as a commonly used diagnostic method, has been widely used. Color ultrasound examination can visually observe the internal structure of the human body and diagnose diseases. However, sometimes medical misdiagnosis still occurs, which can have a profound impact on patients both physically and mentally. Among them, the failure to stop the fetus during color ultrasound is a common example of medical misdiagnosis. Analysis of examples of medical misdiagnosis In the late stages of pregnancy, doctors usually