Abstract：Hypertrophic obstructive cardiomyopathy is a rare kind of idiopathic cardiomyopathy, includes asymmetric myocardial hypertrophy and left ventricular outflow tract cbstruction.The clinical manifestations are from non-symptoms to sudden death.To a patient with hypertrophic obstructive cardiomyopathy who received lumbar discectomy,we tried our best to maintain the stabilities of hemodynamic parameters, avoided the factors which would deteriorate outflow tract cbstruction, kept proper preload and afterload,slowed down the excessive heart rate and myocardial contraction force,gave effective analgesia and anesthesia drugs,maintained the balance of myocardial oxygen supply and consumption.All these measures helped the patient over the perioperative period successfully.