Nosocomial infections are diseases caused by bacteria such as Streptococcus pneumoniae, Haemophilus influenzae, Staphylococcus aureus, Escherichia coli, and other pathogens such as viruses and fungi after admission to the hospital. The prevention of nosocomial infections should be carried out between patients and patients, family members and patients, and health care and patients, and the specific prevention methods are as follows: 1. Prevention between patients and patients: Patients with infection risks and serious infections should be arranged in different wards in the hospital, which can prevent patients who have been infected with diseases from transmitting bacteria and viruses to patients who are not infected; 2. Prevention between family members and patients Prevention: Each patient should be accompanied by only one family member, and the family members should wear masks and wash their hands with soap and water frequently to prevent the pathogens between them from infecting each other; 3. Pathogens should be transmitted to each other. In addition, sanitation and disinfection should be done in the hospital to keep the ward clean and hygienic, and patients should wash their hands regularly and be hygienic. Any discomfort during hospitalization should be promptly reported to the doctor in order to prevent nosocomial infections.