One degree of atrioventricular block in your twenties can heal itself. Atrioventricular block is the delayed or failure of atrial impulse conduction to the ventricles after the atrioventricular junction area has been removed from its physiologic period of inactivity. Atrioventricular block can occur at different sites such as the AV node, Hitchcock’s bundle and bundle branches. Some healthy adults, children, and athletes may develop first- or second-degree type I atrioventricular block, possibly related to increased vagal tone at rest. Patients with first-degree AV block are usually asymptomatic, and in the absence of other associated underlying diseases such as heart disease and chronic obstructive pulmonary emphysema, clinical observation is usually not necessary. It should be noted that persistent atrioventricular block in the elderly, when the degree of block is high, such as calcification and sclerosis of cardiac fibrous stents, myocarditis, endocarditis, polymyositis, cardiomyopathy, acute rheumatic fever, aortic stenosis with calcification, cardiac tumors can lead to second-degree or higher atrioventricular block, and need to be actively treated for the primary disease. If there is any discomfort, consult a doctor in time and standardize the treatment under the doctor’s guidance.