Heart discomfort in cold weather may be caused by excessive contraction of heart blood vessels, high blood pressure, coronary heart disease and other reasons. 1. Excessive contraction of heart blood vessels: when the weather is cold, the patient’s metabolism may decline, and the heart blood vessels contract excessively, resulting in insufficient blood supply to the coronary arteries of the heart. This leads to the patient’s heart discomfort. 2. Hypertension: A sudden drop in body temperature in some hypertensive patients can lead to a sudden rise in blood pressure. This increase in blood pressure can lead to dizziness or headache, but some patients may also experience symptoms such as chest tightness and chest pain. 3. Coronary heart disease: Patients who suffer from coronary heart disease may be prone to cardiovascular spasms when the weather gets cold, which can lead to heart discomfort. Patients should pay attention to keep warm or drink more warm water, according to the doctor’s prescription medication, if long-term heart discomfort problems need to go to the hospital immediately for examination.