For patients with rheumatic heart disease, it is recommended to avoid seafood in their diet. This is because seafood is relatively stimulating and can cause allergic reactions in patients. It is advisable for patients with rheumatic heart disease to follow a light diet, especially consuming easily digestible foods. During this period, the gastrointestinal function of patients is not very good, and there may be some congestion in the gastrointestinal tract, leading to a decrease in appetite. Therefore, it is even more important to eat foods that are easy to digest and pass through the digestive system. It is also important to maintain regular bowel movements. Particularly, spicy and stimulating foods should be avoided. Moreover, regular check-ups of the electrocardiogram and cardiac ultrasound are necessary.