The care of patients in acute and critical care begins with the implementation of general emergency care routines. The patient’s vital signs, mental status, pupils, tongue, pulse and other changes should also be assessed in a timely manner. Timely documentation of the care of critically ill patients should be done. We should closely observe the condition and actively cooperate with the doctor in case of sudden changes in the condition. When giving oral medical advice in compliance with medical prescriptions, it is necessary to repeat it without error before use. To quickly establish intravenous access, timely oxygenation. Should be skilled in completing cardiac monitoring, indwelling catheterization, specimen collection, preoperative preparation, etc. For comatose patients, appropriate position should be placed according to the condition. Do not move the patient at will when the blood pressure is unstable. Keep all kinds of pipelines open and securely fixed to prevent dislodgement, distortion, blockage, etc. Aseptic operation should be strictly enforced to prevent patient infection. Give dietary care according to the condition, fasting patients can be given intravenous nutrition therapy.