Aplastic anemia may lead to nutritional non-absorption. Aplastic anemia (reoccurring anemia): a group of syndromes in which bone marrow hematopoiesis fails due to a variety of causes. The main dangers of aplastic anemia are anemia, infection and bleeding. When anemia occurs, a series of clinical manifestations will occur due to low oxygen or hypoxia in the body, and different clinical symptoms will be produced due to the involvement of different systems, such as weakness, dizziness, vertigo, palpitations, dyspepsia and other symptoms, which will affect the absorption of nutrients and lead to nutritional absorption disorders. Infections commonly occur in the oral cavity, respiratory tract, gastrointestinal tract and soft tissue of the skin, and sepsis can occur in severe cases. Fever, nausea, vomiting and abdominal pain, diarrhea, loss of appetite, and malabsorption of nutrients often occur in gastrointestinal infections. Visceral hemorrhage, intracranial hemorrhage, gastrointestinal hemorrhage, and pulmonary hemorrhage may also occur in severe cases of recalcitrant anemia, and dizziness, palpitations, nausea, thirst, black blindness, fatigue, and impaired nutrient absorption may occur in gastrointestinal hemorrhage. Therefore, when prolonged nutritional non-absorption occurs and is accompanied by other symptoms such as bleeding, dizziness and nausea, it is necessary to consult a doctor in time for targeted treatment under the doctor’s guidance.