Digoxin is a cardiac glycoside, which can increase myocardial contraction, slow down the heart rate and inhibit cardiac conduction. After digoxin poisoning, clinical manifestations include dizziness, nausea, vomiting, loss of appetite, blurred vision, slowed heart rate, etc. It is necessary to go to the hospital emergency department as soon as possible for the following treatment: i. Discontinue the drug: immediately discontinue digoxin, and stop using potassium-depleting diuretics and glucocorticoids. In general, the gastrointestinal and neurological reactions can gradually improve after stopping the drug. Second, symptomatic treatment: 1, tachyarrhythmia, you can take potassium salts orally, or dilute potassium chloride solution in glucose solution, intravenous drip; 2, anuria, hyperkalemia, severe AV block, potassium salts are prohibited, under the guidance of physicians to apply phenytoin sodium, reduce the autoregulation of cardiomyocytes, especially for severe tachyarrhythmia and AV block; 3, tachycardia, frequent premature ventricular contractions. Lidocaine can be used; 4, ventricular premature beats, supraventricular tachycardia, ventricular tachycardia, β-blockers such as propranolol can be used as prescribed, and if drug therapy is ineffective or contraindicated, oral procainamide can be considered, and electric shock defibrillation therapy can be considered if necessary; 5, chronic arrhythmias such as severe AV block and sinus bradycardia can be treated with oral or intravenous atropine, or Apply isoproterenol, add it to glucose solution for intravenous infusion and adjust the medication according to the heart rate. Patients who fail to respond to drug therapy need to be fitted with temporary pacemakers. In addition, digoxin has a relatively large volume of distribution in the body, and hemodialysis treatment is not effective; if necessary, hemoperfusion treatment can be used.