The red blood cell count, hemoglobin, and average red blood cell volume in routine blood test can reflect some situations to some extent, but the diagnosis of thalassemia cannot rely on routine blood test alone. 1. The routine blood test of thalassemia generally shows that the red blood cell count is reduced, the hemoglobin number is reduced, the average red blood cell volume is reduced, and it is microcytic hypochromic anemia. White blood cell and platelet counts are usually normal. 2. For thalassemia, hemoglobin electrophoresis can also be performed, and its hemoglobin electrophoresis results will be abnormal. A red blood cell osmotic fragility test may also be performed, and the red blood cell osmotic fragility is usually decreased. Genetic testing, bone marrow examination, etc. may also be performed. Thalassemia is also classified as mild, intermediate and severe. Different types of thalassemia have different severity of clinical symptoms and require different treatment programs, such as oral deferoxamine and suspended red blood cell transfusion. It is recommended to do further examination in time to understand the specific types of the disease and carry out standardized treatment with the help of doctors.