When a patient is admitted to the hospital, the doctor has to give different levels of care according to different conditions. The nursing levels include four nursing levels: intensive care, primary care, secondary care and tertiary care, among which primary care is applicable to patients in critical condition who need absolute bed rest, such as those in shock, coma, paralysis, hemorrhage and various organ failure after major surgery. The main contents of first-level care include: 1. inspecting patients once every 15-30 minutes to observe changes in condition and vital signs; 2. making nursing plans, operating according to various treatment items and nursing measures, and accurately filling out nursing record sheets; 3. preparing emergency drugs and items in advance as needed; 4. carefully and meticulously caring for patients to prevent complications and meet their physical and mental The patient’s physical and psychological needs should be met, and the patient should be helped to change position, wash hair, cut nails, etc. according to the situation.