Type 2 diabetes can get pregnant, and blood glucose control during pregnancy preparation for men with type 2 diabetes must meet the standard. The control target for adults with type 2 diabetes requires glycosylated hemoglobin to be less than 7.0%, and patients should undergo professional endocrinology consultation. certain glucose-lowering drugs may have an effect on sperm, and choose a safe and effective glucose-lowering regimen to reasonably control blood glucose. female patients with type 2 diabetes who are preparing for pregnancy should have even lower blood glucose control targets, with glycosylated hemoglobin below 6.5%. It is recommended to switch the glucose-lowering regimen during pregnancy preparation and after pregnancy preparation. Once the blood glucose control has reached the standard, women with type 2 diabetes can prepare for pregnancy. Once pregnancy is discovered, oral hypoglycemic drugs, including metformin, need to be discontinued and insulin hypoglycemic regimen should be maintained, and consultation with a regular endocrinologist is required. It is important to consult an endocrinologist about the application of insulin. For pregnant women, there are specific insulins that can be used and some insulins that cannot be used. It is more difficult to control blood glucose during pregnancy, so it is necessary for patients, dietitians, endocrinologists and missionary nurses to work together for reasonable control of blood glucose.