When you experience the following phenomena in your daily life, you should be alert and seek medical attention in time for early detection of rheumatic heart disease. 1.Sudden onset of retrosternal pain with sweating during exertion or stress. 2.Panic, shortness of breath, fatigue and difficulty in breathing during physical activity. 3.Heart palpitations and chest pain when having a full meal, cold, or watching a thrilling movie. 4.In public places or meeting places, or when going upstairs or climbing mountains, you are more likely to feel palpitations, chest tightness, breathlessness and shortness of breath than you used to, especially others. 5.When sleeping at night with a low pillow, I feel that I am holding my breath and need to lie on a high pillow. When I wake up suddenly during a deep sleep or nightmare, I feel palpitations, chest tightness and breathlessness, and I need to sit up to get better. 6.Feeling discomfort such as palpitations, chest tightness or chest pain during sexual intercourse. 7.Recurring irregular, too fast or too slow pulse. 8.Patients with a history of rheumatic fever should be actively prevented.