Myocardial ischemia is a pathological condition in which blood perfusion to the heart is reduced, leading to a decrease in oxygen supply to the heart, abnormal energy metabolism in the heart muscle, and inability to support the normal work of the heart, which may result in a drop in body temperature, and may be accompanied by anterior precordial tenderness, tightness in the chest, and palpitations (a rapid heartbeat, often accompanied by panic), among other symptoms. Myocardial ischemia body temperature will drop is usually caused by excessive sweating, the heart’s oxygen supply will be reduced to cause myocardial ischemia and hypoxia, will lead to pain. The body is stimulated by severe pain, the nervous system will appear protective reflexes, the body’s sympathetic nerves will be more excited, resulting in increased sweating, skin vasodilatation will increase the heat dissipation, a large amount of sweating will take away the body’s heat, resulting in a drop in body temperature. So myocardial ischemia body temperature will fall is a normal performance, if the symptoms are not relieved by lifestyle modification, should promptly consult a doctor to clarify the cause of the disease, under the guidance of the doctor for treatment.