Whether high ketones in pregnancy have an effect on the pregnant woman and her fetus depends on the degree of high ketones and the accompanying symptoms. Checking for ketone bodies is usually done through urine tests. After pregnancy, due to changes in hormone levels in the body and the higher nutritional needs of the growing fetus, severe pregnancy vomiting can lead to starvation ketosis. Reasons such as overeating leading to gestational diabetes can lead to an increase in ketone bodies in the urine, as follows: 1. No effect: If a pregnant woman has an early pregnancy reaction after pregnancy, leading to nausea, vomiting, loss of appetite, etc., because of eating too little, resulting in a small amount of ketone bodies in the urine. If it is caused by this reason, using the principle of eating less and more to increase the amount of food, the ketone body will disappear and will not affect the pregnant woman and the fetus; 2, there are effects: if it is due to high blood sugar or pregnancy dramatic vomiting resulting in pathological ketone body increase, it may cause liver and kidney function damage, Wernicke encephalopathy, resulting in mental depression, irritability, drowsiness, ketoacidosis, and even lead to maternal death, and has a greater impact on fetal development. It is recommended that women who develop ketones during pregnancy must pay attention to them and go to the hospital for pregnancy tests in a timely manner. Adjust the diet according to the doctor’s guidance and treat if necessary.