Insulin during pregnancy generally has no effect on the fetus. Women who take insulin mostly suffer from high blood sugar, when women take insulin during pregnancy under the guidance of doctors, it can play a better effect of lowering blood sugar, regular and moderate use of insulin will not cause hypoglycemia, and there is no direct effect on the fetus, on the contrary, the normal control of blood glucose is also conducive to the normal growth and development of the fetus. During pregnancy insulin should pay more attention to their own situation, if there is dizziness and nausea and other symptoms, you should stop using the drug in a timely manner, and go to the hospital to consult the doctor, avoid self-medication. Patients during pregnancy should go to the hospital in time, choose the appropriate method of treatment, avoid changing the dosage of medication to prevent the development of the fetus.