Pregnant women with high blood sugar is generally not recommended to consume crayfish. Normal value of fasting blood sugar in pregnant women does not exceed 5.1 mmol / L, 1 hour after the meal normal value does not exceed 10.0 mmol / L, 2 hours after the meal normal value does not exceed 8.5 mmol / L, when the pregnant woman’s blood glucose is higher than normal need to be controlled by diet first, it is recommended that you choose cucumber, tomatoes, pomelo, lean meats, milk, coarse grains and other foods, crayfish head may contain heavy metals, pregnant women are generally not It is not recommended to eat during pregnancy. High blood sugar during pregnancy may cause macrosomia, fetal malformation, fetal hypoglycemia and other serious consequences, found that the blood sugar is higher than normal, it is recommended that under the guidance of a physician to actively control blood sugar.