The invention provides a sickbed capable of preventing a patient in the department of cardiology from rolling over and falling off. The sickbed comprises a main body, a fixing part is fixedly installed on the upper side of the main body, a shell is installed in the main body, a driving gear is installed in the shell, and two gear strips are connected to the outer side of the driving gear in an engaged mode. According to the sickbed capable of preventing the patient in the department of cardiology from rolling over and falling off, when the patient suddenly moves, the body of the patient presses one side of the mattress, the mattress senses the change of the weight above, the upper side of the mattress does not change, and the lower side of the mattress presses the supporting rod, so that the supporting rod drives the first movable block to move downwards; a driving gear is engaged with a gear rack to drive a second movable block to move upwards, so that a protective guard moves upwards, the protective guard just blocks a patient needing to fall off, the patient is effectively protected, and the situation that the patient falls off from a bed, falls off and falls off, and secondaryinjury is caused to the patient is avoided; therefore, the equipment achieves the effect of preventing a patient of the cardiology department from rolling over and falling off.