Thalassemia carriers are people who carry the gene for thalassemia but do not show the associated clinical symptoms. Thalassemia, or thalassemia, is a hereditary disease. It is caused by a defect in the gene for the protein called bead protein in the body, resulting in a reduction or loss of the bead protein chain that synthesizes hemoglobin, as well as an obstacle to hemoglobin production, leading to hemolytic anemia and even developmental abnormalities. If only some of the genes or a few of the genes are mutated in thalassemia and half or more of the genes are normal, the anemia is usually not very severe. These patients are subclinical or gene carriers of thalassemia and do not cause the disease. Patients should not judge or diagnose on their own based on one test result. They should consult a doctor in time, who will analyze and clarify the diagnosis according to the specific situation.