Couple relationship generally refers to sexual behavior, as long as there is no recent frequent hypoglycemic episodes, no blood sugar fluctuations, no acute complications of diabetes, etc., people with diabetes can be appropriate to engage in sexual behavior. Blood sugar is too high, frequent hypoglycemic episodes in the near future, large fluctuations in blood sugar, accompanied by acute complications of diabetes such as diabetic ketoacidosis, or accompanied by serious chronic complications of the heart, brain, kidneys, eyes, etc. Sexual intercourse is not recommended, and it should be carried out in the event of stabilization of blood sugar control. It should be noted that diabetic patients should be appropriate sexual behavior, if sexual behavior is more frequent may cause hypoglycemic attacks. Patients diagnosed with diabetes should actively cooperate with the doctor’s treatment.