For people with heart function problems, there may be changes in the tongue, such as redness at the tip of the tongue, bruising of the tongue, and whiteness of the tongue. The main ones are: 1. Redness of the tongue tip is to a large extent related to heart dysfunction. For people with a bad heart yin deficiency tends to cause internal heat, speeding up blood flow, which leads to congestion of the tongue blood vessels, manifesting as a red tongue, and some patients have obvious symptoms, such as poor sleep, palpitations, dry mouth, cracked tongue and other symptoms.2. Tongue bruising is related to poor blood flow. When the pumping function of the heart is impaired it will lead to blood stasis and poor circulation in the circulatory system, and the patient will suffer from chest pain, dizziness, headache and other symptoms. When the tongue is blue and purple one should be on high alert for heart disease, especially cardiovascular thrombosis, which may lead to sudden death if left untreated.3. When the heart’s hematopoietic function is impaired or surgery does not go well, there will be a white tongue, commonly known as a pale white tongue, which is not only white, but also accompanied by palpitations, lethargy, pallor, and a series of symptoms such as a thin and weak pulse.