Patients with anemia may experience nausea because anemia is a clinical syndrome that occurs when the volume of red blood cells in the peripheral blood is lower than normal. As the volume of red blood cells decreases, the blood supply to all organs of the body will be reduced, among which the digestive system will show obvious symptoms, which may manifest as poor appetite, decreased appetite, vomiting, and also nausea. In addition to digestive system symptoms, neurological symptoms are often obvious in patients with anemia, because the central nervous system is most sensitive to oxygen deprivation, and patients may experience headaches, dizziness, tinnitus and dizziness. Also if the dizziness is severe, it may induce a series of manifestations such as nausea and vomiting. Patients with anemia may experience nausea. If patients with anemia experience symptoms, they need to promptly go to the hematology department for examination to clarify the cause of anemia and then give corresponding treatment.