Diabetes is mainly divided into type 1 diabetes, type 2 diabetes, special types of diabetes and gestational diabetes. the difference between type 1 diabetes and type 2 diabetes mainly includes the following points: 1. clinical manifestations, type 1 diabetes occurs mostly in adolescents and children, showing typical symptoms of three more and one less, i.e. polyuria, polydipsia, polyphagia, with wasting, and prone to diabetic ketoacidosis. the age of onset of type 2 diabetes is more Type 2 diabetes has both insulin resistance and insulin deficiency, i.e., it can be treated with oral hypoglycemic drugs and insulin. 3. Type 1 diabetes has a low insulin release curve with no obvious high peaks. The insulin release curve in type 2 diabetes has both a reduced peak of insulin secretion and a delayed peak of secretion.4. Patients with type 1 diabetes are often positive for insulin antibodies, islet cell antibodies, and glutamic acid decarboxylase antibodies, while patients with type 2 diabetes are negative for the relevant antibody tests.