It is not possible to determine which is better, oral or infusion, and it needs to be determined according to the patient’s specific condition. In the case of patients with acute cholecystitis or acute appendicitis, the patient has significant abdominal pain, nausea, vomiting, fever and other clinical manifestations. Antibiotic drugs need to be given to control the condition, in this case, intravenous infusion is more effective than oral administration. It can effectively control the patient’s condition and prevent further aggravation. In the case of hypokalemia, the principle of treatment is to give oral medication when possible, and to give intravenous supplements only when oral medication is not available. Therefore, according to this principle, for patients who can eat, oral administration should be given priority over intravenous supplementation.