Mild left ventricular outflow tract obstruction is usually treated with drugs such as metoprolol or verapamil. Left ventricular outflow tract obstruction is a narrowing of the heart’s left ventricular outflow tract. Common causes of left ventricular outflow tract obstruction include subaortic septal or annular thickening, myocardial hypertrophy, or simple thickening of the basal segment of the interventricular septum, which protrudes into the left ventricular outflow tract, resulting in obstruction of the outflow tract. Mild left ventricular outflow tract obstruction is usually treated with pharmacologic therapy, i.e., beta-blockers such as metoprolol or non-dihydropyridine calcium channel blockers such as verapamil, to improve ventricular diastolic function and thereby reduce left ventricular outflow tract obstruction. In addition, propyzamide may also reduce left ventricular outflow tract obstruction, but this drug increases ventricular rate in patients with atrial fibrillation and should be used with caution. Watch for side effects such as bradycardia, dizziness, headache, flushing, hypotension, nausea, and constipation during drug therapy. If left ventricular outflow tract obstruction is aggravated, such as severe syncope, panic, shortness of breath, fatigue, angina and other manifestations, corresponding surgical treatments, such as aortic valve replacement, septal resection, etc., should be taken under the guidance of the doctor according to the specific cause of the disease, so as not to delay the condition.