The alpha thalassemia gene, SEA deletion heterozygous, is the most common type of alpha thalassemia gene. This type of thalassemia, also known as Southeast Asian thalassemia, is caused by the deletion of two peptide chains 2 due to the alpha gene defect. Since the two alpha gene deletions lead to impaired synthesis of the peptide chain of pearl protein, the patient may have mild symptoms of hemolytic anemia, but some patients do not have significant clinical manifestations. This type is clinically known as standard alpha thalassemia. For this type of thalassemia, it usually does not affect the patient’s normal growth and development, nor does it affect the patient’s normal working life, but when this person has an infection or has taken certain oxidizing agents, it may induce an attack of hemolytic anemia, so in daily cases, this patient does not need treatment, but if there is an obvious hemolytic In case of significant hemolytic anemia, it is often necessary to give appropriate amount of blood transfusion treatment as well.