Drug-induced bradycardia requires assessment of the heart rate and a decision to reduce or discontinue the drug. There are many medications that cause bradycardia clinically, such as the beta-blocker metoprolol, the calcium antagonist verapamil, and the calcium antagonist propafenone. It is important to evaluate the bradycardia to clarify the exact heart rate. If mild bradycardia occurs during drug administration and the patient has no corresponding symptoms, there is no need to adjust the drug dosage for the time being, and continue to observe; however, if severe bradycardia occurs during drug administration, and the patient has symptoms such as fatigue and dizziness, the dosage of the drug should be reduced in time, and the drug can be discontinued if necessary. Drug-induced bradycardia is often temporary, will not lead to permanent bradycardia, after the drug dose reduction or discontinuation of the drug, the symptoms of bradycardia will gradually ease. If the symptoms of bradycardia still exist after stopping the drug, and the patient also has palpitations, dizziness and other symptoms, atropine can be used as appropriate for treatment, and isoprenaline can be used if necessary. The above medications should be used under medical supervision. If bradycardia occurs during the course of taking the medication, it is necessary to go to the hospital in time and have the dosage of the medication adjusted under the guidance of the doctor.