The symptoms of anemia in newborns vary from mild to severe depending on the degree of anemia. Generally, the main symptoms are pallor, shortness of breath, increased heart rate, jaundice, hepatosplenomegaly, etc. Most children have poor appetite and poor milk intake. There are mainly the following types of manifestations: 1. Typical symptoms: If the degree of anemia is heavy, there will often be a pale face, especially the color of the mouth and lips is obviously not red, accompanied by pale fingers and nail beds. There may also be depression or irritable crying, drowsiness, inactivity, unresponsiveness, inattention, weak crying, fine yellow hair, thinning and other symptoms. 2. Cardiopulmonary manifestations: heart rate may increase significantly, shortness of breath, shortness of breath, breathing difficulties, for example, the child may show nasal flapping, or the manifestation of cyanosis of the lips, as well as the acceleration of breathing frequency and deepening of breathing. If the anemia is severe, it may even lead to hypotension, anemic shock, etc.; 3. Jaundice, hepatosplenomegaly: If the anemia is caused by neonatal hemolytic disease, i.e., the newborn and the mother do not have the same blood type, in addition to some typical symptoms, the child is often accompanied by symptoms of jaundice, including yellowing of the face, yellowing of the sclera, i.e., the whites of the eyes, yellow staining, and often accompanied by liver and spleen In severe cases, nuclear jaundice may appear, causing bilirubin encephalopathy; 4. Digestive system symptoms: If the anemia is heavy, the child will have a significant loss of appetite and will not eat milk. Some children also have nausea, vomiting, constipation and other digestive symptoms.