Thalassemia, known as thalassemia, is mainly related to genetic inheritance and does not necessarily develop at the age of 6, but its onset is related to its type and degree of illness. Thalassemia is mainly divided into α-thalassemia and β-thalassemia, and its condition type can be divided into mild, intermediate and severe. 1. β-thalassemia: the severe type is asymptomatic at birth and usually develops at the age of 3 to 12 months; the intermediate type usually develops in early childhood (i.e., at the age of 3 to 7 years); and the mild type is usually asymptomatic or only has mild anemia, with a good prognosis. 2. α-thalassemia: The severe form occurs when the fetus is aborted at 30-40 weeks, stillborn, or dies half an hour after delivery; the intermediate form usually develops anemia and weakness after infancy (i.e., from birth to 1 year of age); and the mild and quiescent forms may be asymptomatic. When thalassemia develops, it should be treated in a timely manner in a hospital, and after the diagnosis is confirmed, it should be prevented and treated in the normal course of life.