Hypokalemia is commonly associated with weakness, nausea and vomiting, abdominal distension and drowsiness. 1. Skeletal muscle symptoms: fatigue, weakness, limb flaccid paralysis, weakened or disappeared tendon reflexes, even paralysis of diaphragm and respiratory muscles, difficulty in breathing and swallowing, and in severe cases, asphyxia may occur. 2. Digestive system symptoms: nausea, vomiting, anorexia, abdominal distension, constipation, weakening or disappearance of intestinal peristalsis, etc., and in severe cases, edema of the submucosal tissues of the intestines. 3. Symptoms of central nervous system: atrophy, unresponsiveness, drowsiness or coma. 4. Circulatory system symptoms: panic, chest tightness, T-wave depression, supraventricular tachycardia or atrial fibrillation on ECG. Patients with hyperkalemia must seek early medical treatment and targeted treatment to avoid aggravation of the condition.