In the medical concept, medical checkup mainly contains two meanings: health checkup and clinical physical examination by doctors. 1. Health checkup: refers to a comprehensive checkup of the body when no obvious disease has appeared in the body, so as to understand the physical condition and screen for diseases, usually including more comprehensive whole-body examinations such as liver and kidney function tests, laboratory tests of blood, urine and stool routines, as well as chest radiographs, electrocardiograms, and ultrasound examinations of the abdomen. For patients with a history of cerebrovascular disease, a CT or MRI of the head is recommended. If there are symptoms of epigastric discomfort or stomach bloating and acid reflux, gastroscopy is necessary to rule out gastric diseases. 2. Physician’s clinical physical examination: it usually includes five categories: auscultation, palpation, olfaction, percussion, and visualization, and the order of examination generally follows the order from top to bottom, including head, neck, chest, abdomen, genitals, anus, spine, limbs, and neurological examination. The examination of each system usually includes looking, touching, knocking and listening. Clinically, the doctor’s physical examination is also often combined with the patient’s complaints to focus on the examination of the key areas. The main purpose of the examination is to understand the patient’s health condition, whether it is a health checkup or a doctor’s clinical examination, usually with two clinical significance of disease diagnosis and exclusion.