Disclosed is a heart stabilizer used when a coronary artery of a heart is operated. The heart stabilizer allows an intake tube connected to a suction unit for holding the heart to perform a suctioning operation while preventing clogging in any circumstances, allows the direction of the suction unit to be converted to forward, rearward, leftward, and rightward directions, allows the angle of the suction unit to be minutely adjusted even after the suction unit is primarily fixed, and is cleaned while the suction unit maintains the adjusting function of the adjustor for adjusting and fixing the angle.
