Ketone bodies are fat decomposition products, under normal circumstances, there is no ketone body in the urine. Ketone bodies found in pregnancy checkups may be seen in the following cases: 1. If the blood sugar is normal, don’t worry too much about the simple urine ketone body (+), pay attention to eating on time, replenish sufficient nutrition, and review and observe again; 2. Pregnancy vomiting: some pregnant women have severe early pregnancy reaction, frequent nausea and vomiting, and cannot eat normally, causing water loss and electrolyte disorders and using body fat, so that its intermediate product acetone accumulates and ketone body in urine ( +). Generally, if you have gestational vomiting, it is recommended that you should be hospitalized for rehydration treatment to correct electrolyte disorders and other conditions; 3, gestational diabetes: if you have gestational diabetes, poor blood sugar control, resulting in metabolic disorders, rapid fat decomposition, ketone body generation exceeds the normal utilization of the body, blood ketones, ketonuria, easily induced diabetic ketoacidosis, to promptly seek medical treatment; 4, gestational combined thyroid Hyperfunction: Pregnant women with hyperthyroidism will strengthen their own metabolic capacity, and if they do not eat in time to replenish energy, they will use body fat, which will increase ketone bodies in the body and appear urinary ketone bodies (+). It is recommended to eat on time during pregnancy, you can have small and frequent meals, as well as strengthen pregnancy monitoring.