The population is generally susceptible to the new coronavirus, and the high-risk types that tend to develop into heavy and critical types after infection are the following groups of people: 1, older people older than 65 years old, as well as patients with cardiovascular disease, hypertension, chronic lung disease, moderate to severe asthma, diabetes, chronic liver disease, chronic kidney disease, and tumors. Patients with underlying diseases are prone to become heavy and critically ill.2 AIDS patients with immune deficiency, people with long-term application of immunosuppressants, obese people, or women with late pregnancy and perinatal period, and in addition, heavy smokers. The above high-risk groups account for more than 90% of heavy and critical patients.