Physical examination is a physical examination by medical means and methods, including the basic examination of clinical departments, including the examination of medical equipment such as ultrasound, electrocardiogram and radiation, as well as the laboratory examination of blood and urine around the human body. Physical examination is a health-centered physical examination. General medical scientists believe that physical examination refers to a comprehensive examination of the body without obvious diseases. It is convenient to know the physical condition and screen physical diseases. That is, physical examination of healthy people through physical examination is a "health examination" or "preventive health examination"
Physical examination is used to understand the health status of the subject, determine whether there are abnormal signs according to the examination results, and further analyze the nature of these abnormal signs. Some abnormal signs are physiological variations, which can be reviewed regularly, and some abnormal signs may be disease risk factors, which need to be intervened and corrected by health promotion means; Moreover, some signs are the basis of disease diagnosis and need further examination and diagnosis.