Simple left bundle branch block with no other comorbid symptoms does not require treatment, and if it is combined with organic heart disease, then appropriate medication will be given to address the organic heart disease. If there are indications for surgical treatment, patients need to be treated with surgery under the guidance of a doctor. 1. Simple left bundle branch block, no other symptoms, then do not need treatment. 2. Pharmacological treatment: combined with organic heart disease, then for organic heart disease to give the appropriate drug treatment. (1) Antiplatelet drugs: they can inhibit platelet aggregation and prevent thrombosis. Commonly used drugs are aspirin, clopidogrel and so on. (2) Lipid regulating drugs: can reduce blood fat, reverse atherosclerotic plaque. Including statins, beta drugs and cholesterol Inhibitors of cholesterol absorption. (3) Vasodilator drugs: such as nitroglycerin, sublingual can relieve angina. (4) Diuretics: reduce edema symptoms caused by heart failure. For example, furosemide, hydrochlorothiazide and so on. (5) Anti-arrhythmic drugs: such as quinidine, procainamide, etc., can help restore the normal electrical rhythm of the heart. 3. Surgery: Simple left bundle branch block does not require surgical intervention. If there is ventricular dyssynchrony, cardiac function class III-IV, ECG QRS wave greater than 150 milliseconds, and left ventricular ejection fraction less than 35% have the indication for cardiac resynchronization therapy, surgery should be performed. Left bundle branch conduction block requires prompt medical attention, improvement of relevant examinations, and systematic treatment under the guidance of a doctor if it is combined with organic cardiac lesions.