After a clear diagnosis of diabetes is made based on blood glucose results, if all three diabetes autoantibodies are positive, a diagnosis of type 1 diabetes can usually be confirmed, and it is recommended to improve pancreatic function and other related tests. The diagnosis of diabetes relies on fasting blood glucose, two-hour postprandial blood glucose, random blood glucose or glycated hemoglobin, and clinical symptoms, while the diagnosis of diabetes typing relies on autoantibody tests and other tests. Clinically, diabetes-related antibody tests generally include islet cell antibodies, insulin autoantibodies, and glutamic acid decarboxylase antibodies, i.e., diabetes autoantibody tests. A positive result for all three diabetic autoantibodies indicates that there are antibodies in the body that can lead to the destruction of pancreatic islet β-cells in the human body, and that the function of pancreatic islets is impaired to varying degrees, with an absolute lack of insulin. This result is rare in normal people, type 2 diabetes and other diseases, and can assist in the diagnosis of type 1 diabetes. Diabetes autoantibody three positive, recommend timely medical treatment, improve the relevant examination.